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.

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.

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.

I must have a prodigious quantity of mind; it takes me as much as a week sometimes to make it read more

I must have a prodigious quantity of mind; it takes me as much as a week sometimes to make it up.

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

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

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.

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.

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

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

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.