Nature is probably quite indifferent to the aesthetic preferences of mathematicians.

The aim of science is to seek the simplest explanation of complex facts... Seek simplicity and distrust it.

Speak out in acts; the time for words has passed, and only deeds will suffice.

Every philosophy is tinged with the coloring of some secret imaginative background, which never emerges explicitly into its train of reasoning.

Youth is life as yet unblemished by much tragedy, but hardly by TV.

I am sure that one secret of a successful teacher is that he has formulated quite clearly in his mind what the pupil has got to know in precise fashion. He will then cease from half-hearted attempts to worry his pupils with memorizing a lot of irrelevant stuff of inferior importance.

Education should turn out the pupil with something he knows well and something he can do well.