He feels that his hands become heavy, hard to move. This is because he is half-separated from his body. Soon he feels quite free of them, light as air. The mental change accompanying this liberation is quite extraordinary. He feels that he would smile gravely and tranquilly, if only he could, but he feels only on the verge of doing so, not being quite able to finish it.
-- Notebooks Category 23: Advanced Contemplation > Chapter 7: Contemplative Stillness > # 71