Great ideas originate in the muscles.

Unfortunately, there seems to be far more opportunity out there than ability.... We should remember that good fortune often happens when opportunity meets with preparation.

Seeming to do is not doing.

Be brave as your fathers before you. Have faith and go forward.

First, study the present construction. Second, ask for all past experiences ...study and read everything you can on the subject.

I have a peculiar theory about radium, and I believe it is the correct one. I believe that there is some mysterious ray pervading the universe that is fluorescing to it. In other words, that all its energy is not self-constructed but that there is a mysterious something in the atmosphere that scientists have not found that is drawing out those infinitesimal atoms and distributing them forcefully and indestructibly.

The man who doesn’t make up his mind to cultivate the habit of thinking misses the greatest pleasure in life.