Patrick Süskind said this quote

He had to hold his body very still, very still, like some vessel about to slosh over from too much motion. Gradually he managed to get control of his breathing. His excited heart beat more steadily; the pounding of the waves inside him subsided slowly. And suddenly solitude fell across his heart like a dusky reflection. He closed his eyes. The dark doors within him opened, and he entered. The next performance in the theatre of his soul was beginning.