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.

The average man's opinions are much less foolish than they would be if he thought for himself.

Order, unity, and continuity are human inventions, just as truly as catalogues and encyclopedias.

The twin conceptions of sin and vindictive punishment seem to be at the root of much that is most vigorous, both in religion and politics.

All exact science is dominated by the idea of approximation.

He will see himself and life and the world as truly as our human limitations will permit; realizing the brevity and minuteness of human life, he will realize also that in individual minds is concentrated whatever of value the known universe contains.

Frege has the merit of ... finding a third assertion by recognising the world of logic which is neither mental nor physical.