Natur 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 12
Creativity The mind uses its faculty for creativity only when experience forces it to do so. Henri Poincare 16
Chance 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... Henri Poincare 15