The difference between mind and heart is that the mind is the surface of the heart, and the heart the depth of the mind: they are the two different aspects of one and the same thing. The mind thinks, the heart feels. What the heart feels the mind wants to interpret in thought; what the mind thinks the heart assimilates expressing it in feeling. Neither is the mind the brain, nor is the heart a piece of flesh hidden under the breast. Those who do not believe in such a thing as the mind think that thoughts and impressions are in the brain, that a person thinks with his brain. It is not true. The brain only helps to make impressions clear to man's material vision.