Leibniz now conceived the idea of putting together all the passages in Bayle's works which interested him, and writing a systematic answer to them. Before he had leisure to finish the task, Bayle died. The work nevertheless appeared in 1710 as the Essays in _Theodicy_. [49] * * * * * PREFACE * * * * * It has ever been seen that men in general have resorted to outward forms for the expression of their religion: sound piety, that is to say, light and virtue, has never been the portion of the many. One should not wonder at this, nothing is so much in accord with human weakness. We are impressed by what is outward, while the inner essence of things requires consideration of such a kind as few persons are fitted to give. As true piety consists in principles and practice, the outward forms of religion imitate these, and are of two kinds: the one kind consists in ceremonial practices, and the other in the formularies of belief. Ceremonies resemble virtuous actions, and formularies are like shadows of the truth and approach, more or less, the true light. All these outward forms would be commendable if those who invented them had rendered them appropriate to maintain and to express that which they imitate--if religious ceremonies, ecclesiastical discipline, the rules of communities, human laws were always like a hedge round the divine law, to withdraw us from any approach to vice, to inure us to the good and to make us familiar with virtue. That was the aim of Moses and of other good lawgivers, of the wise men who founded religious orders, and above all of Jesus Christ, divine founder of the purest and most enlightened religion. It is just the same with the formularies of belief: they would be valid provided there were nothing [50] in them inconsistent with truth unto salvation, even though the full truth concerned were not there. But it happens only too often that religion is choked in ceremonial, and that the divine light is obscured by the opinions of men.