When you want to organize knowledge. you will be careful to base the classification upon essential qualities. You will thus read more

When you want to organize knowledge. you will be careful to base the classification upon essential qualities. You will thus derive classes in which the members have the greatest amount of resemblance to one another and the greatest amount of difference from the members of other classes. But suppose that, instead of organizing knowledge, you set out to organize ignorance and prejudice. You will then do precisely the opposite...You will keep the classification vague and flexible, so that it can be made to include just whatever individuals you choose.

The wise learn from the experience of others, and the creative know how to make a crumb of experience go read more

The wise learn from the experience of others, and the creative know how to make a crumb of experience go a long way.

Reason is the main resource of man in his struggle for survival.

Reason is the main resource of man in his struggle for survival.

Laugh and the world laughs with you; snore and you sleep alone.

Laugh and the world laughs with you; snore and you sleep alone.

What are we when we are alone? Some, when they are alone, cease to exist.

What are we when we are alone? Some, when they are alone, cease to exist.

The Americans are poor haters in international affairs because of their innate feeling of superiority over all foreigners. An American's read more

The Americans are poor haters in international affairs because of their innate feeling of superiority over all foreigners. An American's hatred for a fellow American...is far more virulent than any antipathy he can work up against foreigners...Should Americans begin to hate foreigners wholeheartedly, it will be an indication that they have lost confidence in their own way of life.

Evil witnesses are eyes and ears of men, if they have souls that do not understand their language.

Evil witnesses are eyes and ears of men, if they have souls that do not understand their language.

Firmness of purpose is one of the most necessary sinews of character, and one of the best instruments of success. read more

Firmness of purpose is one of the most necessary sinews of character, and one of the best instruments of success. Without it genius wastes its efforts in a maze of inconsistencies.

In a mad world, only the mad are sane.

In a mad world, only the mad are sane.