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.

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.

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average read more

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.

Be smarter than other people, just don't tell them so.

Be smarter than other people, just don't tell them so.

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

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

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.

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

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

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.

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.