The inventor can't do it all, you've got to change people. We have an enormous capacity to invent super-machinery. But our desire to install the device is weak. Human inertia is the problem, not invention. Something in man makes him resist change.

I've realized that most of my best ideas have followed a good night's sleep.

I have never seen the slightest scientific proof of the religious ideas of heaven and hell, of future life for individuals, or of a personal God.

Before you reject an idea, find at least five good things about it.

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

Of all my inventions, I liked the phonograph best

The real measure of success is the number of experiments that can be crowded into 24 hours.