If we knew exactly the laws of nature and the situation of the universe at the initial moment, we could predict exactly the situation of the same universe at a succeeding moment. -Henri Poincare Nature
If nature were not beautiful, it would not be worth knowing, and if nature were not worth knowing, life would not be worth living. -Henri Poincare Nature
Absolute space, that is to say, the mark to which it would be necessary to refer the earth to know whether it really moves, has no objective existence. -Henri Poincare Space
Science is built up of facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house. -Henri Poincare Science
The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful. -Henri Poincare Nature
A very small cause which escapes our notice determines a considerable effect that we cannot fail to see, and then we say that the effect is due to chance. -Henri Poincare Chance
A scientist worthy of his name, about all a mathematician, experiences in his work the same impression as an artist; his pleasure is as great and of the same nature. -Henri Poincare Nature
