People often say: "Hold the root of the thought, hold the feeling which creates it." If a person has the feeling, 'I want money,' the feeling will grow and grow. He will watch every cent and collect, and he may become a millionaire. If a person has a spark of anger against an enemy, it will grow in his thought and feeling, until he feels bad not only towards his enemy, but towards my friend, only to my enemy", but in time, we shall feel full of enmity towards the friend also.