A bore is a person who opens his mouth and puts his feats in it.

One who fears failure limits his activities.

Thinking is the hardest work there is, which is probably the reason why so few engage in it.

There is a subtle danger in a man thinking that he is "fixed" for life. It indicates that the next jolt of the wheel of progress is going to fling him off.

We are always seeking for those things which are in the clouds, not for those that lie at our feet.

Be ready to revise any system, scrap any method, abandon any theory, if the success of the job requires it.

Money the root of all evil, unless used for good purpose