Among the Tibetans, one wife has many husbands, because men are too poor to support a whole wife.

The only thing that will redeem mankind is cooperation.

One must care about a world one will not see.

Government can easily exist without laws, but law cannot exist without government.

When you are studying any matter or considering any philosophy, ask yourself only: what are the facts, and what is the truth that the facts bear out. Never let yourself be diverted by what you wish to believe, but look only and surely at what are the facts.

For a good notation has a subtlety and suggestiveness which at times make it seem almost like a live teacher.

The commonest objection to birth control is that it is against nature.