There are almost no limits to the discoveries of how the human brain operates in illness and health, in sleep and waking and dreaming, in calm and under tension. The question is how far man can put these discoveries to use without using them not for cure but for power.

What is dangerous about tranquillizers is that whatever peace of mind they bring is a packaged peace of mind. Where you buy a pill and buy peace of mind with it, you get conditioned to cheap solutions instead of deep ones.

It is not science that has destroyed the world, despite all the gloomy forebodings of the earlier prophets. It is man who has destroyed man.

Despite the success cult, men are most deeply moved not by the reaching of the goal but by the grandness of the effort involved in getting there - or failing to get there.

A people's speech is the skin of its culture.

We cannot live by power, and a culture that seeks to live by it becomes brutal and sterile. But we can die without it.

When evil acts in the world it always manages to find instruments who believe that what they do is not evil but honorable.