Albertus Magnus; Cologne

You will remember that Albertus Magnus, after describing minutely the process by which spirits may be invoked and commanded, adds emphatically that the process will instruct and avail only to the few - that a man must be born a magician! - that is, born with a peculiar physical temperament, as a man is born a poet. Rarely are men in whose constitution lurks this occult power of the highest order of intellect - usually in the intellect there is some twist, perversity, or disease. - E. Bulwer-Lytton