Something as superfluous as "play" is also an essential feature of our consciousness. If you ask children why they like to play, they will say, "Because it's fun." But that invites the next question: What is fun? Actually, when children play, they are often trying to reenact complex human interactions in simplified form. Human society is extremely sophisticated, much too involved for the developing brains of young children, so children run simplified simulations of adult society, playing games such as doctor, cops and robber, and school. Each game is a model that allows children to experiment with a small segment of adult behavior and then run simulations into the future. (Similarly, when adults engage in play, such as a game of poker, the brain constantly creates a model of what cards the various players possess, and then projects that model into the future, using previous data about people's personality, ability to bluff, etc. The key to games like chess, cards, and gambling is the ability to simulate the future. Animals, which live largely in the present, are not as good at games as humans are, especially if they involve planning. Infant mammals do engage in a form of play, but this is more for exercise, testing one another, practicing future battles, and establishing the coming social pecking order rather than simulating the future.)

No child should ever be too sad to play.

Men who give up the common goal of all things that exist, thereby cease to exist themselves. Some may perhaps think it strange that we say that wicked men, who form the majority of men, do not exist; but that is how it is. I am not trying to deny the wickedness of the wicked; what I do deny is that their existence is absolute and complete existence. Just as you might call a corpse a dead man, but couldn't simply call it a man, so I would agree that the wicked are wicked, but could not agree that they have unqualified existence.

Our country in general assumes that "the pursuit of happiness" really means "the pursuit of pleasure" and that therefore pleasure is the greatest good.

He felt that there is a loose balance of good and evil, and that the art of living consists in getting the greatest good out of the greatest evil.

The West's post-Holocaust pledge that genocide would never again be tolerated proved to be hollow, and for all the fine sentiments inspired by the memory of Auschwitz, the problem remains that denouncing evil is a far cry from doing good.