All significant achievement comes from daring from experiment from the willingness to risk failure.

The art of living consists in knowing which impulses to obey and which must be made to obey.

People decline invitations when they are "indisposed" physically, and I wish they would do likewise when they feel indisposed emotionally. A person has no more right to attend a party with a head full of venom than with a throat full of virus.

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

Sincerity that thinks it is the sole possessor of the truth is a deadlier sin than hypocrisy, which knows better.

The severest test of character is not so much the ability to keep a secret as it is, when the secret is finally out, to refrain from disclosing that you knew it all along.

The main discomfort in being a middle-of-the-roader is that you get sideswiped by partisans going in both directions.