Proverbs should be sold in pairs, a single one being but a half truth.

It cannot be too often repeated that it is not helps, but obstacles, not facilities, but difficulties that make men.

In the world a man lives in his own age; in solitude in all ages.

The first law of success is concentration - to bed all the energies to one point, and to go directly to that point, looking neither to the right nor the left.

[A]s if it were not the masterful will which subjugates the forces of nature to be the genii of the lamp... that forces a life-thought into a pregnant word or phrase, and sends it ringing through the ages!

Proverbs should be sold in pairs, a single one being but a half truth.