“If the universe is teeming with life other than ours, then this, we are told, makes it quite ridiculous to believe that God should be so concerned with the human race as to ‘come down from Heaven’ and be made man for its redemption. If, on the other hand, our planet is really unique in harbouring organic life, then this is thought to prove that life is only an accidental by-product in the universe and so again to disprove our religion.”