Your emotional capacity is an empty motor, and your values are the fuel with which your mind fills it. If you choose a mix of contradictions, it will clog your motor, corrode your transmission and wreck you on your first attempt to move with a machine which you, the driver, have corrupted.

It meant nothing to him any longer, only a faint tinge of sadness--and somewhere within him, a drop of pain moving briefly and vanishing, like a raindrop on the glass of a window, its course in the shape of a question mark.

Whether you know the shape of a pebble or the structure of a solar system, the anxioms remain the same: that it exists and that you know it.

If parasitism, favoritism, corruption, and greed for the unearned did not exist, a mixed economy would bring them into existence.

Have you noticed that the imbecile always smiles? Man's first frown is the first touch of God on his forehead. The touch of thought.

Serenity comes from the ability to say “Yes” to existence. Courage comes from the ability to say “No” to the wrong choices made by others.

The genius must have his freedom and his independence.