"The contention that it is sin to have dominion over nature is simple nonsense. The Pope frustrates nature by getting shaved and having his hair cut, as well as by practicing continence. Whenever we catch a fish or shoot a wolf or a lamb, whenever we pull a weed or prune a tree, we frustrate nature. Disease germs are perfectly natural little fellows which must be frustrated before we can get well. Nature frustrates her own processes by the most astounding wastage, as we have already seen in the case of the sperms and ova, which she produces for the man and the woman by the million only to let them perish. When the Pope speaks about nature he seems to forget that the human mind is also part of nature. The thoughts we think and the emotions we feel are the work of nature. He does not seem to realize that the enjoyment in sexual intercourse is largely psychical. It is a mental and spiritual as well as a physical enjoyment. The stronger the love and the finer the characters of the married pair, the greater is this psychical enjoyment during intercourse. To impose continence is to prevent the finest union of love, to frustrate mental and spiritual nature in its urge toward perfection. Contraception in no way interferes with the oneness which is most necessary--even though the Pope calls it a secondary end--to the preservation of married happiness."