Note 98:1 — III

e. g. the struggle for existence among animals and plants; the ἀλληλοφαγία, or 'mutual devouring', of animals; and such points as the various advances in evolution which seem self-destructive. Thus, Man has learnt to stand on two feet and use his hands; a great advantage but one which has led to numerous diseases. Again, physiologists say that the increasing size of the human head, especially when combined with the diminishing size of the pelvis, tends to make normal birth impossible.