Good and evil, reward and punishment, are the only motives to a rational creature; these are the spur and reins whereby al mankind are set on work, and guided.

The change in motion is proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.

Desire is the key to motivation, but it’s the determination and commitment to an unrelenting pursuit of your goal—a commitment to excellence—that will enable you to attain the success you seek.

Leaders must be close enough to relate to others, but far enough ahead to motivate them.

Religion is a great force—the only real motive force in the world; but what you fellows don't understand is that you must get a man through his own religion and not through yours.

A happy life consists not in the absence, but in the mastery of hardships.

All good writing is swimming under water and holding your breath.