---
title: "3 Important Philosophical Quotes by 3 authors"
description: "Browse 3 Important Philosophical quotes by 3 authors. Discover the best Important Philosophical sayings and thoughts."
image: "https://sms4smile.com/quotes/i/cf7/peter-adamson-14769_als_al-ghazali-is-the-most-important-philoso_447532.jpg"
---

> [Al-Ghazali is the most important philosophical theologian of classical Islam, and Moderation in Belief is among his most important works. It sets…](https://sms4smile.com/quotes/peter-adamson/al-ghazali-is-the-most-important-philosophical-theologian-of/)

[Peter Adamson](https://sms4smile.com/quotes/author/peter-adamson/)

[Image](https://sms4smile.com/quotes/i/cf7/peter-adamson-14769_als_al-ghazali-is-the-most-important-philoso_447532.jpg)

> [“The philosopher Karl Popper (1902–94) often remarked “We don’t know anything” and believed that this was the most important philosophical truth.16”](https://sms4smile.com/quotes/karen-armstrong/the-philosopher-karl-popper-1902-94-often-remarked-we-don-t-know/)

[Karen Armstrong](https://sms4smile.com/quotes/author/karen-armstrong/)

[Image](https://sms4smile.com/quotes/i/703/karen-armstrong-1053_philosopher_the-philosopher-karl-popper-1902-94-ofte_636977.jpg)

> [“You might discuss important philosophical topics, such as the nature of existence- or what a bunch of lying toe rags politicians are.”](https://sms4smile.com/quotes/nick-spalding/you-might-discuss-important-philosophical-topics-such-as-the-nature/)

[Nick Spalding](https://sms4smile.com/quotes/author/nick-spalding/)

[Image](https://sms4smile.com/quotes/i/15d/nick-spalding-32386_discuss_you-might-discuss-important-philosophica_844350.jpg)

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