---
title: "2 Mathematician Know Quotes By Henri Poincare"
description: "2 Mathematician Know quotes by Henri Poincare. Plus more from Henri Poincare and more Mathematician Know sayings from other authors."
image: "https://sms4smile.com/quotes/i/5eb/henri-poincare-3339_computers_no-more-than-these-machines-need-the-mat_737186.jpg"
---

> [No more than these machines need the mathematician know what he does.](https://sms4smile.com/quotes/henri-poincare/no-more-than-these-machines-need-the-mathematician-know-what-he-does/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

[Image](https://sms4smile.com/quotes/i/5eb/henri-poincare-3339_computers_no-more-than-these-machines-need-the-mat_737186.jpg)

> [Thus, be it understood, to demonstrate a theorem, it is neither necessary nor even advantageous to know what it means. The geometer might be replaced by the "logic piano" imagined by Stanley Jevons; or, if you choose, a machine might…](https://sms4smile.com/quotes/henri-poincare/thus-be-it-understood-to-demonstrate-a-theorem-it-is-neither-2/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

[Image](https://sms4smile.com/quotes/i/041/henri-poincare-3339_alive_thus-be-it-understood-to-demonstrate-a-t_3144034.jpg)

## More by Henri Poincare

> [The mathematical facts worthy of being studied are those which, by their analogy with other facts, are capable of leading us to the knowledge…](https://sms4smile.com/quotes/henri-poincare/the-mathematical-facts-worthy-of-being-studied-are-those-which-by/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [. . . by natural selection our mind has adapted itself to the conditions of the external world. It has adopted the geometry most…](https://sms4smile.com/quotes/henri-poincare/by-natural-selection-our-mind-has-adapted-itself-to-the-conditions-of/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [If we knew exactly the laws of nature and the situation of the universe at the initial moment, we could predict exactly the situation…](https://sms4smile.com/quotes/henri-poincare/if-we-knew-exactly-the-laws-of-nature-and-the-situation-of-the/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [Absolute space, that is to say, the mark to which it would be necessary to refer the earth to know whether it really moves,…](https://sms4smile.com/quotes/henri-poincare/absolute-space-that-is-to-say-the-mark-to-which-it-would-be-necessary/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [Science is facts.](https://sms4smile.com/quotes/henri-poincare/science-is-facts/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [Absolute space, that is to say, the mark to which it would be necessary to refer the earth to know whether it really moves,…](https://sms4smile.com/quotes/henri-poincare/absolute-space-that-is-to-say-the-mark-to-which-it-would-be-necessary-2/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [All of mathematics is a tale about groups.](https://sms4smile.com/quotes/henri-poincare/all-of-mathematics-is-a-tale-about-groups/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [A cat is witty, he has nerve, he knows how to do precisely the right thing at the right moment.](https://sms4smile.com/quotes/henri-poincare/a-cat-is-witty-he-has-nerve-he-knows-how-to-do-precisely-the-right/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [In the old days when people invented a new function they had something useful in mind.](https://sms4smile.com/quotes/henri-poincare/in-the-old-days-when-people-invented-a-new-function-they-had/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [Intuition is more important to discovery than logic.](https://sms4smile.com/quotes/henri-poincare/intuition-is-more-important-to-discovery-than-logic/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [Mathematics has a threefold purpose. It must provide an instrument for the study of nature. But this is not all: it has a philosophical…](https://sms4smile.com/quotes/henri-poincare/mathematics-has-a-threefold-purpose-it-must-provide-an-instrument-for/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [Experiment is the sole source of truth.](https://sms4smile.com/quotes/henri-poincare/experiment-is-the-sole-source-of-truth/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [“ Qu'une goutee de vin tombe dans un verre d'eau; quelle que soit la loi du movement interne du liquide, nous verrons bientôt se…](https://sms4smile.com/quotes/henri-poincare/qu-une-goutee-de-vin-tombe-dans-un-verre-d-eau-quelle-que-soit-la-loi/)

[Henri Poincaré](https://sms4smile.com/quotes/author/henri-poincare/)

> [If that enabled us to predict the succeeding situation with the same approximation, that is all we require, and we should say that the…](https://sms4smile.com/quotes/henri-poincare/if-that-enabled-us-to-predict-the-succeeding-situation-with-the-same/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

> [“ Le savant doit ordonner ; on fait la science avec des faits comme une maison avec des pierres ; mais une accumulation de…](https://sms4smile.com/quotes/henri-poincare/le-savant-doit-ordonner-on-fait-la-science-avec-des-faits-comme-une/)

[Henri Poincare](https://sms4smile.com/quotes/author/henri-poincare/)

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