Once I dreamed I was a butterfly, and now I no longer know whether I am Chuang Tzu, who dreamed I was a butterfly, or whether I am a butterfly dreaming that I am Chuang Tzu.

By ethical argument and moral principle the greatest crimes are eventually shown to have been necessary, and, in fact, a signal benefit to mankind.

The greatest tragedy that can befall a person is the atrophy of his mind.

When you're dreaming, you don't know it's a dream. You might even interpret a dream in your dream - and then wake up and realize it was all a dream. Perhaps a great awakening will reveal this to be a dream as well.

When the shoe fits, the foot is forgotten; when the belt fits, the belly is forgotten; when the heart is right, "for" and "against" are forgotten. There is no change in what is inside, no following what is outside, when the adjustment to events is comfortable. One begins with what is comfortable and never experiences what is uncomfortable, when one knows the comfort of forgetting what is comfortable.

The true man breathes with his heels.

As regards the quietude of the sage, he is not quiet because quietness is said to be good. He is quiet because the multitude of things cannot disturb his quietude. When water is still, one's beard and eyelashes are reflected in it. A skilled carpenter uses it in a level to obtain a measurement. If still water is so clear, how much more are the mental faculties! The mind of the sage is the mirror of heaven and earth in which all things are reflected.