Good teaching must be slow enough so that it is not confusing, and fast enough so that it is not boring.

We can often endure an extra pound of pain far more easily than we can suffer the withdrawal of an ounce of accustomed pleasure.

The generality of mankind is lazy. What distinguishes men of genuine achievement from the rest of us is not so much their intellectual powers and aptitudes as their curiosity, their energy, their fullest use of their potentialities. Nobody really knows how smart or talented he is until he finds the incentives to use himself to the fullest. God has given us more than we know what to do with.

The art of listening needs its highest development in listening to oneself; our most important task is to develop an ear that can really hear what we're saying.

There are always too many Democratic congressmen, too many Republican congressmen, and never enough U.S. congressmen.

A winner rebukes and forgives; a loser is too timid to rebuke and too petty to forgive.

The greatest enemy of progress is not stagnation, but false progress.