Schools need not preach political doctrine to defend democracy. If they shape men capable of critical thought and trained in social attitudes, that is all that is necessary.

A society's competitive advantage will come not from how well its schools teach the multiplication and periodic tables, but from how well they stimulate imagination and creativity.

Beyond the realms of what we see, into the regions or the unexplored limited only by our imaginations.

Try first to be a man of value; success will follow.

I urge a willingness to reserve a place in rational science for non-rational wonder.

To the extent math refers to reality, we are not certain to the extent we are certain, math does not refer to reality.

The mere formulation of a problem is far more essential than its solution, which may be merely a matter of mathematical or experimental skills. To raise new questions, new possibilities, to regard old problems from a new angle requires creative imagination and marks real advances in science.