Our individual life is brief, and perhaps the whole life of mankind will be brief if measured in astronomical scale

Understanding human nature must be the basis of any real improvement in human life. Science has done wonders in mastering the laws of the physical world, but our own nature is much less understood, as yet, than the nature of stars and electrons. When science learns to understand human nature, it will be able to bring a happiness into our lives which machines and the physical sciences have failed to create.

There was a law in Connecticut - I believe it is still formally unrepealed - making it illegal for a man to kiss his wife on Sunday.

There seems scarcely any limit to what could be done in the way of producing a good world, if only men would use science wisely.

Animal rights, taken to their logical conclusion, mean votes for oysters.

The man who has fed the chicken every day throughout its life at last wrings its neck instead, showing that more refined views as to the uniformity of nature would have been useful to the chicken.

Whatever we know without inference is mental.