"My third example was given me by a friend in Hanover, who owned a small café. He would daily throw out crumbs for the sparrows in the neighborhood. He noticed that one sparrow was injured, so that it had difficulty getting about. But he was interested to discover that the other sparrows, apparently by mutual agreement, would leave the crumbs which lay nearest to their crippled comrade, so that he could get his share, undisturbed.
So much, then, for this question of the natural origin of the ethic of reverence for life. It does not need to make any pretensions to high titles or noble-sounding theories to explain its existence. Quite simply, it has the courage to admit that it comes about through physiological make-up. It is given physically. But the point is that it arrives at the noblest spirituality. God does not rest content with commanding ethics. He gives it to us in our very hearts."