A man able to think isn't defeated - even when he is defeated.

People derived too much pleasure from seeing their fellow man morally humiliated to spoil that pleasure by hearing out an explanation.

To be mortal is the most basic human experience, and yet man has never been able to accept it, grasp it, and behave accordingly. Man doesn't know how to be mortal. And when he dies, he doesn't even know how to be dead.

Only the basic situations in life occur only once, never to return. For a man to be a man, he must be fully aware of this never-to-return. (p.148)

We are born one time only, we can never start a new life equipped with the experience we've gained from the previous one. We leave childhood without knowing what youth is, we marry without knowing what it is to be married, and even when we enter old age, we don't know what it is we're heading for: the old are innocent children innocent of thier old age. In that sense, man's world is the planet of inexperience.