I try not to invent things that people don't need.

The successful person makes a habit of doing what the failing person doesn't like to do.

The strength of the Constitution, lies in the will of the people to defend it.

The Bible of nature is the best damn Bible in the world. Its laws are perfect and grand, and all the prayers in the world can't change them. There is intelligence and law in this world, and there may be supreme intelligence and law, but so far as the religion of the day is concerned, it is all a damned fake.

The inventor tries to meet the demand of a crazy civilization.

The body is a community made up of its innumerable cells or inhabitants.

The greatest invention in the world is the mind of a child.