Freud defines religion as an illusion, consisting of "certain dogmas, assertions about facts and conditions of external and internal reality which tells one something that one has not oneself discovered, and which claim that one should give them credence." Religious concepts are transmitted in three ways and thereby claim our belief. "Firstly because our primal ancestors already believed them; secondly, because we possess proofs which have been handed down to us from antiquity, and thirdly because it is forbidden to raise the question of their authenticity at all." Psychologically speaking, these beliefs present the phenomena of wish fulfillment, "fulfillments of the oldest, strongest, and most urgent wishes of mankind." (Ch. 6 pg.38).