---
title: "1 Science Teaches Quotes By Claude Bernard"
description: "1 Science Teaches quotes by Claude Bernard. Plus more from Claude Bernard and more Science Teaches sayings from other authors."
image: "https://sms4smile.com/quotes/i/91c/claude-bernard-7455_doubt_true-science-teaches-us-to-doubt-and-in_2244989.png"
---

> [True science teaches us to doubt and, in ignorance, to refrain.](https://sms4smile.com/quotes/claude-bernard/true-science-teaches-us-to-doubt-and-in-ignorance-to-refrain/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

[Image](https://sms4smile.com/quotes/i/91c/claude-bernard-7455_doubt_true-science-teaches-us-to-doubt-and-in_2244989.png)

## More by Claude Bernard

> [In every enterprise ... the mind is always reasoning, and, even when we seem to act without a motive, an instinctive logic still directs…](https://sms4smile.com/quotes/claude-bernard/in-every-enterprise-the-mind-is-always-reasoning-and-even-when-we/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [Descriptive anatomy is to physiology what geography is to history, and just as it is not enough to know the typography of a country…](https://sms4smile.com/quotes/claude-bernard/descriptive-anatomy-is-to-physiology-what-geography-is-to-history-and/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [Mediocre men often have the most acquired knowledge. It is in the darker. It is in the darker regions of science that great men…](https://sms4smile.com/quotes/claude-bernard/mediocre-men-often-have-the-most-acquired-knowledge-it-is-in-the/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [Ardent desire for knowledge, in fact, is the one motive attracting and supporting investigators in their efforts; and just this knowledge, really grasped and…](https://sms4smile.com/quotes/claude-bernard/ardent-desire-for-knowledge-in-fact-is-the-one-motive-attracting-and/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [If I had to define life in a single phrase, I should clearly express my thought of throwing into relief one characteristic which, in…](https://sms4smile.com/quotes/claude-bernard/if-i-had-to-define-life-in-a-single-phrase-i-should-clearly-express/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [The investigator should have a robust faith - and yet not believe.](https://sms4smile.com/quotes/claude-bernard/the-investigator-should-have-a-robust-faith-and-yet-not-believe/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [Even mistaken hypotheses and theories are of use in leading to discoveries. This remark is true in all the sciences. The alchemists founded chemistry…](https://sms4smile.com/quotes/claude-bernard/even-mistaken-hypotheses-and-theories-are-of-use-in-leading-to/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [Tout est poison, rien n'est poison, tout est une question de dose. Everything is poisonous, nothing is poisonous, it is all a matter of…](https://sms4smile.com/quotes/claude-bernard/tout-est-poison-rien-n-est-poison-tout-est-une-question-de-dose/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [A fact in itself is nothing. It is valuable only for the idea attached to it, or for the proof which it furnishes.](https://sms4smile.com/quotes/claude-bernard/a-fact-in-itself-is-nothing-it-is-valuable-only-for-the-idea-attached/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [It is what we know already that often prevents us from learning.](https://sms4smile.com/quotes/claude-bernard/it-is-what-we-know-already-that-often-prevents-us-from-learning/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [We must remain, in a word, in an intellectual disposition which seems paradoxical, but which, in my opinion, represents the true mind of the…](https://sms4smile.com/quotes/claude-bernard/we-must-remain-in-a-word-in-an-intellectual-disposition-which-seems/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [The fact that knowledge endlessly recedes as the investigator is about to grasp it is what constitutes at the same time his torment and…](https://sms4smile.com/quotes/claude-bernard/the-fact-that-knowledge-endlessly-recedes-as-the-investigator-is/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [But while I accept specialization in the practice, I reject it utterly in the theory of science.](https://sms4smile.com/quotes/claude-bernard/but-while-i-accept-specialization-in-the-practice-i-reject-it-utterly/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [Men who have excessive faith in their theories ... make poor observations, because they choose among the results of their experiments only what suits…](https://sms4smile.com/quotes/claude-bernard/men-who-have-excessive-faith-in-their-theories-make-poor-observations/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

> [First causes are outside the realm of science.](https://sms4smile.com/quotes/claude-bernard/first-causes-are-outside-the-realm-of-science/)

[Claude Bernard](https://sms4smile.com/quotes/author/claude-bernard/)

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