"She (HPB) had already given us two lists of the requirements for chelaship...: A Chela is a person who has offered himself to a master as a pupil to learn practically the hidden mysteries of nature and the psychical powers latent in man. The master... is always an Adept in the Occult Science. A man of profound knowledge, exoteric and esoteric, especially the latter, and one who has brought his carnal nature under the subjection of the will...To offer oneself as a candidate for Chelaship is easy enough; to develop into an Adept is the most difficult task any man could possibly undertake..."