Moses was the first great optimist of whom any record remains, and one of the greatest. He was the prototype of all those who have followed. He was a visionary. All optimists must be visionaries. Moses based the social system which he tried to organize, not on observed facts, but on _a priori_ theories evolved out of his own mind, and he met with the failure that all men of that cast of mind must meet with when he sought to realize his visions. His theory was that the universe about him was the expression of an infinite mind which operated according to law. That this mind, or consciousness, was intelligent and capable of communicating with man. That it did, in fact, so communicate through him, as a medium, and that other men had only to receive humbly and obey implicitly his revelations to arrive at a condition nearly approaching, if not absolutely reaching, perfection, while they should enjoy happiness and prosperity in the land in which they should be permitted, by an infinite and supernatural power and wisdom, to dwell. All this is not alien to the attitude of scientific optimists at the present day, who anticipate progressive perfection. Let us consider, for a moment, whither these _a priori_ theories led, when put in practice upon human beings, including himself. And, in the first place, it will probably be conceded that no optimist could have, or ever hope to have, a fairer opportunity to try his experiment than had Moses on that plastic Hebrew community which he undertook to lead through Arabia. Also it must be admitted that Moses, as an expounder of a moral code, achieved success. The moral principles which he laid down have been accepted as sound from that day to this, and are still written up in our churches, as a standard for men and women, however slackly they may be observed. But when we come to mark the methods by which Moses obtained acceptance of his code by his contemporaries, and, above all, sought to constrain obedience to himself and to it, we find the prospect unalluring. To begin with, Moses had only begun the exodus when he learned from his practical father-in-law that the system he employed was fantastic and certain to fail: his notion being that he should sit and judge causes himself, as the mouthpiece of the infinite, and that therefore each judgment he gave would demand a separate miracle or imposture. This could not be contemplated. Therefore Moses was constrained to impose his code in writing, once for all, by one gigantic fraud which he must perpetrate himself. This he tried at Sinai, unblushingly declaring that the stone tablets which he produced were “written with the finger of God”; wherefore, as they must have been written by himself, or under his personal supervision, he brazenly and deliberately lied. His good faith was obviously suspected, and this suspicion caused disastrous results. To support his lie Moses caused three thousand unsuspecting and trusting men to be murdered in cold