There are but two powers in the world, the sword and the mind. In the long run the sword is always beaten by the mind.

Only when you combine sound intellect with emotional discipline do you get rational behavior.

The more we live by our intellect, the less we understand the meaning of life.

Books, in all their variety, offer the human intellect the means whereby civilisation may be carried triumphantly forward.

A military leader must possess as much character as intellect. Men who have a great deal of intellect and little character are the least suited; they are like a ship whose masts are out of proportion to the ballast; it is preferable to have much character and little intellect. Those men whose intellect is mediocre and whose character is in proportion are likely to succeed in their profession. The base must equal the height.

True wisdom lies in one's confession about the limits of one's knowledge.