It is difficult at the first thought to say whether it is the impression of the external part of ourselves which forms the mind, or if it is the impression of the inner part which forms the body. In reality both do their work: body makes mind and mind makes body. The mind makes a stronger impression upon the body, and the body makes a clearer impression upon the mind. The thought of illness brings illness to the body; the thought of youth and beauty develops these qualities; at the same time cleanliness of body helps to bring purity to the mind; strength of body gives courage to the mind.