There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Imagination is more important than knowledge.

Knowledge of what is does not open the door directly to what should be.

There's no such thing in aging, but maturing and knowledge. It's beautiful, I call that beauty.

For the kind of America in which we believe is too strong ever to acknowledge fear and too wise ever to fear knowledge. This is the kind of America - and the kind of Republican Party - in which I believe.

One whose knowledge is confined to books and whose wealth is in the possession of others, can use neither his knowledge nor wealth when the need for them arises.