There is much more opportunity than there are people to see it.

There is no substitute for hard work.

Personally, I enjoy working about 18 hours a day. Besides the short catnaps I take each day, I average about four to five hours of sleep per night.

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

I never did anything worth doing entirely by accident. . . Almost none of my inventions came about totally by accident. They were achieved by having trained myself to endure and tolerate hard work.

You can't realize your dreams unless you have one to begin with.

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