Pessimism is a waste of time.

Hope is independent of the apparatus of logic.

For every low there is an equal but opposite high.

The main failure of education is that it has not prepared people to comprehend matters concerning human destiny.

Laughter serves as a blocking agent. Like a bullet-proof vest, it may help protect you against the ravages of negative emotions that can assault you in disease.

We are becoming a nation of sissies and hypochondriacs, a self medicating society easily intimidated by pain and prone to panic. We understand almost nothing about the essential robustness of the human body or its ability to meet the challenge of illness.

What was significant about the laughter . . . was not just the fact that it provides internal exercise for a person . . . form of jogging for the innards, but that it creates a mood in which the other positive emotions can be put to work, too.