Faith in the possibility of science, generated antecedently to the development of modern scientific theory, is an unconscious derivative from medieval theology.

The vitality of thought is in adventure. Idea's won't keep. Something must be done about them. When the idea is new, its custodians have fervour, live for it, and, if need be, die for it. Their inheritors receive the idea, perhaps now strong and successful, but without inheriting the fervour; so the idea settles down to a comfortable middle age, turns senile, and dies.

Philosophy is the product of wonder.

There are no whole truths: All truths are half-truths.

The guiding motto in the life of every natural philosopher should be, seek simplicity and distrust it.

You may not divide the seamless coat of learning.

Learning preserves the errors of the past as well as its wisdom.