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.

You have to be smart. The easy days are over.

You have to be smart. The easy days are over.

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.

A woman uses her intelligence to find reasons to support her intuition.

A woman uses her intelligence to find reasons to support her intuition.

Mad, adj.: Affected with a high degree of intellectual independence.

Mad, adj.: Affected with a high degree of intellectual independence.

It has yet to be proven that intelligence has any survival value.

It has yet to be proven that intelligence has any survival value.

I not only use all the brains that I have, but all that I can borrow.

I not only use all the brains that I have, but all that I can borrow.

The mind is not a vessel to be filled but a fire to be kindled.

The mind is not a vessel to be filled but a fire to be kindled.

Intelligence is the ability to adapt to change.

Intelligence is the ability to adapt to change.