Two wrongs don't make a right, but they make a good excuse.
The stupid neither forgive nor forget; the naive forgive and forget; the wise forgive but do not forget.
The proverb warns that, 'You should not bite the hand that feeds you.' But maybe you should, if it prevents you from feeding yourself.
People often say that this or that person has not yet found himself. But the self is not something one finds, it is something one creates.
The plague of mankind is the fear and rejection of diversity: monotheism, monarchy, monogamy and, in our age, monomedicine. The belief that there is only one right way to live, only one right way to regulate religious, political, sexual, medical affairs is the root cause of the greatest threat to man: members of his own species, bent on ensuring his salvation, security, and sanity.
In the animal kingdom, the rule is, eat or be eaten; in the human kingdom, define or be defined.
If you talk to God, you are praying. If God talks to you, you have schizophrenia.
When a person can no longer laugh at himself, it is time for others to laugh at him.
Clear thinking requires courage rather than intelligence.
Every act of conscious learning requires the willingness to suffer an injury to one's self-esteem. That is why young children, before they are aware of their own self-importance, learn so easily; and why older persons, especially if vain or important, cannot learn at all.