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

Why do most Americans look up to education and down upon educated people?

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

Honesty consists of the unwillingness to lie to others; maturity, which is equally hard to attain, consists of the unwillingness to lie to oneself.

No one should pay attention to a man delivering a lecture or a sermon on his "philosophy of life" until we know exactly how he treats his wife, his children, his neighbors, his friends, his subordinates and his enemies.

As we grow older, we should learn that these are two quite different things. Character is something you forge for yourself; temperament is something you are born with and can only slightly modify. Some people have easy temperaments and weak characters; others have difficult temperaments and strong characters. We are all prone to confuse the two in assessing people we associate with. Those with easy temperaments and weak characters are more likable than admirable; those with difficult temperaments and strong characters are more admirable than likable.

When you run into someone who is disagreeable to others, you may be sure he is uncomfortable with himself; the amount of pain we inflict upon others is directly proportional to the amount we feel within us.