The chief obstacle to the progress of the human race is the human race.

A pessimist is a person who has had to listen to too many optimists.

An optimist is the person who has never had any experience at all.

It has been my observation and experience, and that of my family, that nothing human works out well.

It would be a colorless world if each individual did not secretly believe himself superior to almost everyone else.

Honesty is a good thing, but it is not profitable to its possessor unless it is kept under control.

For all of the creeds are false, and all of the creeds are true; And low at the shrines where my brothers bow, there will I bow too; For no form of a god, and no fashion Man has made in his desperate passion, But is worthy some worship of mine; Not too hot with a gross belief, Nor yet too cold with pride, I will bow me down where my brothers bow, Humble, but open eyed.