There is only one way... to get anybody to do anything. And that is by making the other person want to do it.

Anybody who watches three games of football in a row should be declared brain dead.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

What is to give light must endure burning.

No one can make you feel inferior without your consent.

Liberty, according to my metaphysics is a self-determining power in an intellectual agent. It implies thought and choice and power.

If a dog will not come to you after having looked you in the face, you should go home and examine your conscience.

I am not ashamed to confess that I am ignorant of what I do not know.

I hope I shall possess firmness and virtue enough to maintain what I consider the most enviable of all titles, the character of an honest man.

One of the advantages of being disorderly is that one is constantly making exciting discoveries.

I am not now That which I have been.

I've learned that you shouldn't go through life with a catcher's mitt on both hands; you need to be able to throw something back.

If the world was perfect, it wouldn't be.

Enthusiasm... the sustaining power of all great action.

That which costs little is less valued.

Many have had their greatness made for them by their enemies.

What is necessary to change a person is to change his awareness of himself.

At the bottom of enmity between strangers lies indifference.

In the United States today, we have more than our share of the nattering nabobs of negativism.

The more intense the nature of a man, the more readily will he find meditation, and the more successfully will he practice it.

In just six weeks from the time the design was started, we had the motor on the block testing its power.