There is no law by which one can, as long as he thinks he can't.

Talk happiness. The world is sad enough without your woe.

Concentrate . . . for the greatest achievements are reserved for the man of single aim, in whom no rival powers divide the empire of the soul.

The greatest thing a man can do in this world is to make the most possible out of the stuff that has been given him. This is success, and there is no other.

Doing common things uncommonly well.

Power gravitates to the man who knows how.

Most of our obstacles would melt away if, instead of cowering before them, we should make up our minds to walk boldly through them.