Man becomes man only by his intelligence, but he is man only by his heart.

Man becomes man only by his intelligence, but he is man only by his heart.

To educate the intelligence is to expand the horizon of its wants and desires.

To educate the intelligence is to expand the horizon of its wants and desires.

An intelligent man is sometimes forced to be drunk to spend time with his fools.

An intelligent man is sometimes forced to be drunk to spend time with his fools.

It is the mark of a truly intelligent person to be moved by statistics.

It is the mark of a truly intelligent person to be moved by statistics.

Power corrupts. Knowledge is power. Study hard. Be evil.

Power corrupts. Knowledge is power. Study hard. Be evil.

The sum of intelligence on the planet is a constant; the population is growing.

The sum of intelligence on the planet is a constant; the population is growing.

All intelligent thoughts have already been thought; what is necessary is only to try to think them again.

All intelligent thoughts have already been thought; what is necessary is only to try to think them again.

Intelligence is the wife, imagination is the mistress, memory is the servant.

Intelligence is the wife, imagination is the mistress, memory is the servant.

The emotional brain responds to an event more quickly than the thinking brain.

The emotional brain responds to an event more quickly than the thinking brain.