Watch your thoughts for they become words. Watch your words for they become actions. Watch your actions for they become habits. Watch your habits for they become your character. And watch your character for it becomes your destiny. What we think, we become. My father always said that... and I think I am fine.
The soul is that which denies the body. For example, that which refuses to run when the body trembles, to strike when the body is angry, to drink when the body is thirsty.