To be mentally healthy, people must have self-esteem. People must maintain self-esteem by constantly earning the respect of others they respect, and only by treating them ethically. Which of the following conclusions can be derived from the above? ['Mental health will be treated ethically by others.', 'Mental health will treat people they respect ethically.', 'Mental health must have self-esteem in order to be treated ethically by others.', 'Self-respecting people rarely treat those they respect ethically.']