Patriotism which has the quality of intoxication is a danger not only to its native land but to the world, and "My country never wrong" is an even more dangerous maxim than "My country, right or wrong."

When considering marriage one should ask oneself this question; 'will I be able to talk with this person into old age?' Everything else is transitory, the most time is spent in conversation.

A sense of duty is useful in work but offensive in personal relations. People wish to be liked, not to be endured with patient resignation.

Boys and girls should be taught respect for each other's liberty... and that jealousy and possessiveness kill love.

For over two thousand years it has been the custom among earnest moralists to decry happiness as something degraded and unworthy

The fact that a belief has a good moral effect upon a man is no evidence whatsoever in favor of its truth. I'm not contending in a dogmatic way that there is not a God. What I'm contending is that we don't know that there is. I don't like the word "absolute." I don't think there is anything absolute whatever. The moral law, for example, is always changing. At one period in the development of the human race, almost everybody thought cannibalism was a duty.

I remain convinced that obstinate addiction to ordinary language in our private thoughts is one of the main obstacles to progress in philosophy.