Here is a grand programme for human society.

Here is a vigorous discipline for the wayward will and temper of the human heart.

How is a man to feel and act in these new conditions?
How is he to regulate his hates and loves, his passions and appetites, to comply properly with these extended and complicated relationships?
About half way from Adam's day to ours, there came an utterance from Mount Sinai that anticipated and answered these questions once for all, and for one and all.

In that august revelation of the Divine Mind, every command of the Decalogue swung open upon the pivot of a _not_, except one; and that one referred to man's duty to man, and the promise attached to its fulfilment was only an earthly enjoyment.

All the rest were restrictive; to curb this appetite, to bar that passion, to hedge this impulse, to check that disposition; in a word, to hold back the hand from open and positive transgression.