Charity is in the heart of man, and righteousness in the path of men. Pity the man who has lost his path and does not follow it and who has lost his heart and does not know how to recover it. When people's dogs and chicks are lost they go out and look for them and yet the people who have lost their hearts do not go out and look for them. The principle of self-cultivation consists in nothing but trying to look for the lost heart.