One man's theology is another man's belly laugh.
One man's magic is another man's engineering. Supernatural is a null word.
Never appeal to a man's better nature. He may not have one. Invoking his self-interest gives you more leverage.
I don't trust a man who talks about ethics when he is picking my pocket. But if he is acting in his own self-interest and says so, I have usually been able to work out some way to do business with him.
I never learned from a man who agreed with me.
Man is not a rational animal, he is a rationalizing animal.
Aside from a cold appreciation of my own genius I felt that I was a modest man.
If you would know a man, observe how he treats a cat.
My old man claimed that the more complicated the law the more opportunity for scoundrels.
Courage is the complement of fear. A man who is fearless cannot be courageous.
Dear, don't bore him with trivia or burden him with your past mistakes. The happiest way to deal with a man is never to tell him anything he does not need to know.
Democracy is based on the assumption that a million men are wiser than one man. How's that again? I missed something. Autocracy is based on the assumption that one man is wiser than a million men. Let's play that over again, too. Who decides?
Patriotism is not sentimental nonsense. Nor something dreamed up by demagogues. Patriotism is as necessary a part of man's evolutionary equipment as are his eyes, as useful to the race as eyes are to the individual.
Many short-sighted fools think that going to the Moon was just a stunt. But the astronauts knew the meaning of what they were doing, as is shown by Neil Armstrong's first words in stepping down onto the soil of Luna: One small step for a man, one giant leap for mankind.
Wisdom includes not getting angry unnecessarily. The Law ignores trifles and the wise man does, too.