Grief can seldom touch the one who is understanding, who has achieved balance, who has realized the knowledge of the scriptures, and is ever free from envy, self-control and master of his senses. The wise man should hold fast to this illumination and keep watch over his thoughts; he then knows how the world arises and dissolves, and no grief can touch him. Whatsoever be the cause whence may arise a grief or an affliction or a sorrow or a labor of spirit, a man should put away that from which these may spring, even though it were a limb of his own body. Whenever any work is done from a spirit of selfishness, it becomes a source of grief. Whatever desires are cast out, their place is filled up by happiness; but the man who runs after desires falls into destruction after his desires.