America is not just a country, it's an idea.

Only the human brain can deliberately change perceptions, change patterns, invent concepts and tolerate ambiguity.

Humor is by far the most significant activity of the human brain.

Many highly intelligent people are poor thinkers. Many people of average intelligence are skilled thinkers. The power of a car is separate from the way the car is driven.

Humor is probably the most significant characteristics of the human mind. Far more significant than reason. In fact, reason is actually a very cheap commodity.

Removing the faults in a stage-coach may produce a perfect stage-coach, but it is unlikely to produce the first motor car.

There's a danger in the internet and social media. The notion that information is enough, that more and more information is enough, that you don't have to think, you just have to get more information - gets very dangerous.