---
title: "Meaning & Key Takeaway of: Psychology assumes that \"things\" are and…"
description: "\"Psychology assumes that \"things\" are and \"minds\" are; and that, within certain limits determined by the so-called \"nature\" of both, they act causally u..."
image: "https://sms4smile.com/quotes/i/840/george-trumbull-ladd-54943_assuming_psychology-assumes-that-things-are-and-m_261613.jpg"
---

#  Psychology assumes that "things" are and "minds" are; and…

![“Psychology assumes that &quot;things&quot; are and &quot;minds&quot; are; and that, within certain limits determined by the so-called &quot;nature&quot; of both, they act causally upon each other.” quote by George Trumbull Ladd](https://sms4smile.com/quotes/i/840/george-trumbull-ladd-54943_assuming_psychology-assumes-that-things-are-and-m_261613.jpg)   [Download](https://sms4smile.com/quotes/i/840/george-trumbull-ladd-54943_assuming_psychology-assumes-that-things-are-and-m_261613.jpg) [Open image](https://sms4smile.com/quotes/i/840/george-trumbull-ladd-54943_assuming_psychology-assumes-that-things-are-and-m_261613.jpg)

> “Psychology assumes that "things" are and "minds" are; and that, within certain limits determined by the so-called "nature" of both, they act causally upon each other.”

[George Trumbull Ladd](https://sms4smile.com/quotes/author/george-trumbull-ladd/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

The mind and the external world interact causally within natural limits, shaping each other’s behavior.

**In simple terms:** Mind and things affect each other within natural bounds.

Key Takeaway

Study the reciprocal influence of mind and environment.

Themes

psychology philosophy causality nature

Mood

analytical inquisitive

Type

theoretical academic

When to use this quote

- clinical practice
- educational design
- AI modeling

Key Concepts

dualism interactionism determinism

Questions to Reflect On

- How do mental states shape perception?
- What limits exist on mind‑body interaction?

A Different Perspective

Complex systems may exceed simple causal explanations.

★ ★ ★ ★ ★   No ratings yet

[Determined](https://sms4smile.com/quotes/about/determined/) [Limits](https://sms4smile.com/quotes/about/limits/) [Mind](https://sms4smile.com/quotes/about/mind/) [Psychology](https://sms4smile.com/quotes/about/psychology/)

## Related quotes

> [“People don't like to change their minds. Once they perceive you one way, that's it. They kind of file you away in their minds…](https://sms4smile.com/quotes/al-ries-jack-trout/people-don-t-like-to-change-their-minds-once-they-perceive-you-one/)

Al Ries, Jack Trout

> [...if it isn't literally true that my wanting is causally responsible for my reaching, and my itching is causally responsible for my scratching, and…](https://sms4smile.com/quotes/jerry-fodor/if-it-isn-t-literally-true-that-my-wanting-is-causally-responsible/)

[Jerry Fodor](https://sms4smile.com/quotes/author/jerry-fodor/)

> [I believe people can move things with their minds.](https://sms4smile.com/quotes/justin-timberlake/i-believe-people-can-move-things-with-their-minds/)

[Justin Timberlake](https://sms4smile.com/quotes/author/justin-timberlake/)

> [Most writers do similar things in their minds. It's how the mind works, basically.](https://sms4smile.com/quotes/raymond-pettibon/most-writers-do-similar-things-in-their-minds-it-s-how-the-mind-works/)

[Raymond Pettibon](https://sms4smile.com/quotes/author/raymond-pettibon/)

> [“Whatever their bodies do affects their souls. It is funny how mortals always picture us as putting things into their minds: in reality our…](https://sms4smile.com/quotes/c-s-lewis-2/whatever-their-bodies-do-affects-their-souls-it-is-funny-how-mortals/)

[C.S. Lewis](https://sms4smile.com/quotes/author/c-s-lewis-2/)

> [Forgetting stuff is just human, especially when other things are on our minds.](https://sms4smile.com/quotes/claudia-winkleman/forgetting-stuff-is-just-human-especially-when-other-things-are-on/)

[Claudia Winkleman](https://sms4smile.com/quotes/author/claudia-winkleman/)

> [It is funny how mortals always picture us as putting things into their minds: in reality our best work is done by keeping things…](https://sms4smile.com/quotes/anonymous/it-is-funny-how-mortals-always-picture-us-as-putting-things-into/)

[Anonymous](https://sms4smile.com/quotes/author/anonymous/)

> [One must believe that every living thing whatsoever must change insensibly in its organization and in its form... One must therefore never expect to…](https://sms4smile.com/quotes/jean-baptiste-lamarck/one-must-believe-that-every-living-thing-whatsoever-must-change/)

[Jean-Baptiste Lamarck](https://sms4smile.com/quotes/author/jean-baptiste-lamarck/)

> [A state of mind is something that one assumes. It cannot be purchased, it must be created.](https://sms4smile.com/quotes/napoleon-hill/a-state-of-mind-is-something-that-one-assumes-it-cannot-be-purchased/)

[Napoleon Hill](https://sms4smile.com/quotes/author/napoleon-hill/)

> [Assuming normal winter weather, we currently anticipate the coal markets to remain difficult through 2015; while we always strive to operate a full capacity…](https://sms4smile.com/quotes/joe-craft/assuming-normal-winter-weather-we-currently-anticipate-the-coal/)

[Joe Craft](https://sms4smile.com/quotes/author/joe-craft/)

> [Whatever your conscious mind assumes and believes to be true, your subconscious mind will accept and bring to pass. Believe in good fortune, divine…](https://sms4smile.com/quotes/joseph-murphy/whatever-your-conscious-mind-assumes-and-believes-to-be-true-your/)

[Joseph Murphy](https://sms4smile.com/quotes/author/joseph-murphy/)

> [Islam never differentiates between men and women as regards political rights and puts them on an equal footing. However, even if a woman is…](https://sms4smile.com/quotes/yusuf-al-qaradawi/islam-never-differentiates-between-men-and-women-as-regards-political/)

[Yusuf al-Qaradawi](https://sms4smile.com/quotes/author/yusuf-al-qaradawi/)

> [Everyone assumes writers spend their time lounging around, writing and occasionally striking a pose whilst having a think.](https://sms4smile.com/quotes/sara-sheridan/everyone-assumes-writers-spend-their-time-lounging-around-writing-and/)

[Sara Sheridan](https://sms4smile.com/quotes/author/sara-sheridan/)

> [Our young Marines of today are courageous, willing to make sacrifices, and are marvelous team players. I am confident our Corps, and indeed our…](https://sms4smile.com/quotes/james-t-conway/our-young-marines-of-today-are-courageous-willing-to-make-sacrifices/)

James T. Conway

> [Some books are not read in the right way because they have skipped a stage of opinion, assume a crystallization of information in society…](https://sms4smile.com/quotes/doris-lessing/some-books-are-not-read-in-the-right-way-because-they-have-skipped-a/)

[Doris Lessing](https://sms4smile.com/quotes/author/doris-lessing/)

## More by George Trumbull Ladd

> [A high place of honor, although doubtless one to be obtained only after enduring the pangs of a prolonged crucifixion, awaits that philosophical biologist,…](https://sms4smile.com/quotes/george-trumbull-ladd/a-high-place-of-honor-although-doubtless-one-to-be-obtained-only/)

[George Trumbull Ladd](https://sms4smile.com/quotes/author/george-trumbull-ladd/)

> [Without the ontological assumption which goes with it, what is called science, is nothing but the dreamer's well-ordered dream.](https://sms4smile.com/quotes/george-trumbull-ladd/without-the-ontological-assumption-which-goes-with-it-what-is-called/)

[George Trumbull Ladd](https://sms4smile.com/quotes/author/george-trumbull-ladd/)

> [To accept with unquestioning faith, or to refuse to reconsider any particular view held by the Church in the past, is as unreasonable as…](https://sms4smile.com/quotes/george-trumbull-ladd/to-accept-with-unquestioning-faith-or-to-refuse-to-reconsider-any/)

[George Trumbull Ladd](https://sms4smile.com/quotes/author/george-trumbull-ladd/)

> [It is instructive, although somewhat disheartening, for the ardent advocate of a purely scientific psychology to contrast the practice and theories of his colleagues…](https://sms4smile.com/quotes/george-trumbull-ladd/it-is-instructive-although-somewhat-disheartening-for-the-ardent/)

[George Trumbull Ladd](https://sms4smile.com/quotes/author/george-trumbull-ladd/)

> [Education is so much of an organic unity that, if any of the stages or elements of it be defective, the deficiency is felt…](https://sms4smile.com/quotes/george-trumbull-ladd/education-is-so-much-of-an-organic-unity-that-if-any-of-the-stages-or/)

[George Trumbull Ladd](https://sms4smile.com/quotes/author/george-trumbull-ladd/)

[Explore all 6 George Trumbull Ladd quotes ](https://sms4smile.com/quotes/author/george-trumbull-ladd/)

## More Assuming quotes

> [Some books are not read in the right way because they have skipped a stage of opinion, assume a crystallization of information in society…](https://sms4smile.com/quotes/doris-lessing/some-books-are-not-read-in-the-right-way-because-they-have-skipped-a/)

[Doris Lessing](https://sms4smile.com/quotes/author/doris-lessing/)

> [Our young Marines of today are courageous, willing to make sacrifices, and are marvelous team players. I am confident our Corps, and indeed our…](https://sms4smile.com/quotes/james-t-conway/our-young-marines-of-today-are-courageous-willing-to-make-sacrifices/)

James T. Conway

> [Everyone assumes writers spend their time lounging around, writing and occasionally striking a pose whilst having a think.](https://sms4smile.com/quotes/sara-sheridan/everyone-assumes-writers-spend-their-time-lounging-around-writing-and/)

[Sara Sheridan](https://sms4smile.com/quotes/author/sara-sheridan/)

> [Islam never differentiates between men and women as regards political rights and puts them on an equal footing. However, even if a woman is…](https://sms4smile.com/quotes/yusuf-al-qaradawi/islam-never-differentiates-between-men-and-women-as-regards-political/)

[Yusuf al-Qaradawi](https://sms4smile.com/quotes/author/yusuf-al-qaradawi/)

> [Whatever your conscious mind assumes and believes to be true, your subconscious mind will accept and bring to pass. Believe in good fortune, divine…](https://sms4smile.com/quotes/joseph-murphy/whatever-your-conscious-mind-assumes-and-believes-to-be-true-your/)

[Joseph Murphy](https://sms4smile.com/quotes/author/joseph-murphy/)

> [Assuming normal winter weather, we currently anticipate the coal markets to remain difficult through 2015; while we always strive to operate a full capacity…](https://sms4smile.com/quotes/joe-craft/assuming-normal-winter-weather-we-currently-anticipate-the-coal/)

[Joe Craft](https://sms4smile.com/quotes/author/joe-craft/)

> [A state of mind is something that one assumes. It cannot be purchased, it must be created.](https://sms4smile.com/quotes/napoleon-hill/a-state-of-mind-is-something-that-one-assumes-it-cannot-be-purchased/)

[Napoleon Hill](https://sms4smile.com/quotes/author/napoleon-hill/)

> [One must believe that every living thing whatsoever must change insensibly in its organization and in its form... One must therefore never expect to…](https://sms4smile.com/quotes/jean-baptiste-lamarck/one-must-believe-that-every-living-thing-whatsoever-must-change/)

[Jean-Baptiste Lamarck](https://sms4smile.com/quotes/author/jean-baptiste-lamarck/)

> [I think the biggest problem working with me would be that I'm an only child, and so I have an internal dialogue that goes…](https://sms4smile.com/quotes/maynard-james-keenan/i-think-the-biggest-problem-working-with-me-would-be-that-i-m-an-only/)

[Maynard James Keenan](https://sms4smile.com/quotes/author/maynard-james-keenan/)

> [It is worth noticing that those who assume an imposing demeanor and seek to pass themselves off for something beyond what they are, are…](https://sms4smile.com/quotes/richard-whately/it-is-worth-noticing-that-those-who-assume-an-imposing-demeanor-and/)

[Richard Whately](https://sms4smile.com/quotes/author/richard-whately/)

> [People just assume that if you're famous, you're in Hollywood.](https://sms4smile.com/quotes/megan-fox/people-just-assume-that-if-you-re-famous-you-re-in-hollywood/)

[Megan Fox](https://sms4smile.com/quotes/author/megan-fox/)

> [The behavior of any bureaucratic organization can best be understood by assuming that it is controlled by a secret cabal of its enemies.](https://sms4smile.com/quotes/robert-conquest/the-behavior-of-any-bureaucratic-organization-can-best-be-understood/)

[Robert Conquest](https://sms4smile.com/quotes/author/robert-conquest/)

> [Humans suffer from self-centred notions as to the nature of life. Humans assume that alien life forms should conform to standards that match our…](https://sms4smile.com/quotes/steve-perry/humans-suffer-from-self-centred-notions-as-to-the-nature-of-life/)

[Steve Perry](https://sms4smile.com/quotes/author/steve-perry/)

> [We can use our art to become political, to become something you want to talk about. We make clothes, but we have the chance…](https://sms4smile.com/quotes/olivier-rousteing/we-can-use-our-art-to-become-political-to-become-something-you-want/)

[Olivier Rousteing](https://sms4smile.com/quotes/author/olivier-rousteing/)

> [Everyone seems to assume that the unscrupulous parts of journalism will be the frivolous or jocular parts. This is against all ethical experience. Jokes…](https://sms4smile.com/quotes/gilbert-k-chesterton/everyone-seems-to-assume-that-the-unscrupulous-parts-of-journalism/)

[Gilbert K. Chesterton](https://sms4smile.com/quotes/author/gilbert-k-chesterton/)

Browse all 2,452 Assuming quotes

```json
{
    "@context": "https://schema.org",
    "@graph": [
        {
            "@type": "Quotation",
            "text": "Psychology assumes that \"things\" are and \"minds\" are; and that, within certain limits determined by the so-called \"nature\" of both, they act causally upon each other.",
            "creator": {
                "@type": "Person",
                "name": "George Trumbull Ladd"
            },
            "isPartOf": {
                "@id": "https://sms4smile.com/quotes/#website"
            },
            "url": "https://sms4smile.com/quotes/george-trumbull-ladd/psychology-assumes-that-things-are-and-minds-are-and-that-within/",
            "about": {
                "@type": "Thing",
                "name": "Assuming"
            },
            "@id": "https://sms4smile.com/quotes/george-trumbull-ladd/psychology-assumes-that-things-are-and-minds-are-and-that-within/#quotation",
            "image": {
                "@type": "ImageObject",
                "@id": "https://sms4smile.com/quotes/i/840/george-trumbull-ladd-54943_assuming_psychology-assumes-that-things-are-and-m_261613.jpg",
                "contentUrl": "https://sms4smile.com/quotes/i/840/george-trumbull-ladd-54943_assuming_psychology-assumes-that-things-are-and-m_261613.jpg",
                "url": "https://sms4smile.com/quotes/i/840/george-trumbull-ladd-54943_assuming_psychology-assumes-that-things-are-and-m_261613.jpg",
                "width": 1080,
                "height": 1080,
                "caption": "“Psychology assumes that \"things\" are and \"minds\" are; and that, within certain limits determined by the…” — George Trumbull Ladd",
                "creditText": "SMS4Smile Quotes",
                "creator": {
                    "@id": "https://sms4smile.com/quotes/#organization"
                }
            }
        },
        {
            "@type": "BreadcrumbList",
            "itemListElement": [
                {
                    "@type": "ListItem",
                    "position": 1,
                    "name": "Home",
                    "item": "https://sms4smile.com/"
                },
                {
                    "@type": "ListItem",
                    "position": 2,
                    "name": "Quotes",
                    "item": "https://sms4smile.com/quotes/"
                },
                {
                    "@type": "ListItem",
                    "position": 3,
                    "name": "George Trumbull Ladd",
                    "item": "https://sms4smile.com/quotes/author/george-trumbull-ladd/"
                },
                {
                    "@type": "ListItem",
                    "position": 4,
                    "name": "Psychology assumes that \"things\" are and...",
                    "item": "https://sms4smile.com/quotes/george-trumbull-ladd/psychology-assumes-that-things-are-and-minds-are-and-that-within/"
                }
            ],
            "@id": "https://sms4smile.com/quotes/george-trumbull-ladd/psychology-assumes-that-things-are-and-minds-are-and-that-within/#breadcrumb"
        },
        {
            "@type": "WebSite",
            "@id": "https://sms4smile.com/quotes/#website",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "publisher": {
                "@id": "https://sms4smile.com/quotes/#organization"
            }
        },
        {
            "@type": "Organization",
            "@id": "https://sms4smile.com/quotes/#organization",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "logo": {
                "@type": "ImageObject",
                "url": "https://sms4smile.com/quotes/wp-content/themes/sq/assets/icons/icon-512.png",
                "width": 512,
                "height": 512
            }
        }
    ]
}
```
