Since the mathematicians have invaded the theory of relativity I do not understand it myself any more.

We must learn to see the world anew.

I no longer believed in the known God of the Bible, but rather in the mysterious God expressed in nature.

The most valuable thing a teacher can impart to children is not knowledge and understanding per se but a longing for knowledge and understanding, and an appreciation for intellectual values, whether they be artistic, scientific, or moral. It is the supreme art of the teacher to awaken joy in creative expression and knowledge. Most teachers waste their time by asking questions that are intended to discover what a pupil does not know, whereas the true art of questioning is to discover what the pupil does know or is capable of knowing.

Success = 1 part work + 1 part play + 1 part keep your mouth shut

With fame I become more and more stupid, which of course is a very common phenomenon.

To invent something, all you need is imagination and a big pile of junk.