As to the grossness and subtlety of human nature, the heroes, kings, masters, prophets, those who have won the heart of humanity, have been fine in perception and in character. They have not been gross. Their fineness was simple; there was always a simple side to it, but at the same time it was subtle, which made it beautiful. A person who can say without saying and one who can do without doing is a subtle person and that subtlety is worth appreciating. The one who sees and does not see, knows and does not know; the one who experiences and does not experience at the same time, the one who is living and yet dead, that is the soul who experiences life fully.