It's pretty hard to be efficient without being obnoxious.

The only foes that threaten America are the enemies at home, and these are ignorance, superstition and incompetence.

I believe the Universe is planned for good.

Secrets are things we give to others to keep for us.

Enthusiasm is the great hill-climber.

Of all the mental and physical polluters of life, nothing exercises such a poisonous effect as fear.

Postponement: The father of failure.