We may find a confirmation of the opinion that the natural and psychical forces of an individual are called angels in a statement of our Sages which is frequently quoted, and occurs originally in Bereshit Rabba (chap. lxxviii.): " Every day God creates a legion of angels; they sing before Him, and disappear. " When, in opposition to this statement, other statements were quoted to the effect that angels are eternal-and, in fact, it has repeatedly been shown that they live permanently-the reply has been given that some angels live permanently, others perish; and this is really the case: for individual forces are transient, whilst the genera are permanent and imperishable.