"The mind uses its faculty for creativity only when experience forces it to do so."
"Life can only be understood backwards but it must be lived forwards."Henri Poincare on Soren Kierkegaard
"The only source of knowledge is experience."Henri Poincare on Albert Einstein
"Experience: that most brutal of teachers. But you learn, my God do you learn."Henri Poincare on C. S. Lewis
"Experience is simply the name we give our mistakes."Henri Poincare on Oscar Wilde
"A man who carries a cat by the tail learns something he can learn in no other way."Henri Poincare on Mark Twain
"The mathematical facts worthy of being studied are those which, by their analogy with other facts, are capable of leading us to the knowledge of a physical law."
"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."
"It is through science that we prove, but through intuition that we discover."
"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."
"Just as houses are made of stones, so is science made of facts."