When you become quiet, it just dawns on you

Interest is the invention of Satan.

Keep on the lookout for novel ideas that others have used successfully. Your idea has to be original only in its adaptation to the problem you're working on.

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.

There seems to be no limit to which some men will go to avoid the labor of thinking. Thinking is hard work.

The dove is my emblem.

The first requisite of success is the ability to apply your physical and mental energies to one problem without growing weary.