There are some ideas so wrong that only a very intelligent person could believe in them.

There are some ideas so wrong that only a very intelligent person could believe in them.

A person must have a certain amount of intelligent ignorance to get anywhere.

A person must have a certain amount of intelligent ignorance to get anywhere.

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.

Intelligence is the ability to adapt to change.

Intelligence is the ability to adapt to change.

Be as smart as you can, but remember that it is always better to be wise than to be smart.

Be as smart as you can, but remember that it is always better to be wise than to be smart.

Always be smarter than the people who hire you.

Always be smarter than the people who hire you.

Continuous effort - not strength or intelligence - is the key to unlocking our potential

Continuous effort - not strength or intelligence - is the key to unlocking our potential

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

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

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.