It is better to have a fair intellect that is well used than a powerful one that is idle.

The bookful blockhead, ignorantly read With loads of learned lumber in his head.

There is no greater evidence of superior intelligence than to be surprised at nothing.

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

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

I can't tell you if genius is hereditary, because heaven has granted me no offspring.

If little else, the brain is an educational toy.

People are smarter than you might think.

There is nobody so irritating as somebody with less intelligence and more sense than we have.

It is not worth an intelligent man's time to be in the majority. By definition, there are already enough people to do that.