To reconcile general evolutionary theory with the origin of the human species, with a soul, the concept of " special transformism " was developed, according to which the first humans had evolved by Darwinist processes, up to the point where a soul was added by God to " pre-existent and living matter " ( in the words of Pius XII's " Humani generis " ) to form the first fully human individuals; this would normally be considered to be at the point of conception.
