Do not look for approval except for the consciousness of doing your best.

As I grow older, I pay less attention to what men say. I just watch what they do.

Do your duty and a little more and the future will take care of itself.

The average person puts only 25% of his energy and ability into his work. The world takes off its hat to those who put in more than 50% of their capacity, and stands on its head for those few and far between souls who devote 100%.

Think of yourself as on the threshold of unparalleled success. A whole, clear, glorious life lies before you. Achieve! Achieve!

And while the law of competition may be sometimes hard for the individual, it is best for the race, because it ensures the survival of the fittest in every department.

The man who acquires the ability to take full possession of his own mind may take possession of anything else to which he is justly entitled.

No man will make a great leader who wants to do it all himself or get all the credit for doing it.

Concentration is my motto - first honesty, then industry, then concentration.