"What sages would have died to learn, [Is] taught by cottage dames." Nor is this the only point in which the revelations of science may be compared to the supernatural revelations of Christianity. Though 5 sacred truth was delivered once for all, and scientific discoveries are progressive, yet there is a great resemblance in the respective histories of Christianity and of Science. We are accustomed to point to the rise and spread of Christianity as 10 a miraculous fact, and rightly so, on account of the weakness of its instruments, and the appalling weight and multiplicity of the obstacles which confronted it. To clear away those obstacles was to move mountains; yet this was done by 15 a few poor, obscure, unbefriended men, and their poor, obscure, unbefriended followers. No social movement can come up to this marvel, which is singular and archetypical, certainly; it is a Divine work, and we soon cease to admire 20 it in order to adore. But there is more in it than its own greatness to contemplate; it is so great as to be prolific of greatness. Those whom it has created, its children who have become such by a supernatural power, have imitated, in their 25 own acts, the dispensation which made them what they were; and, though they have not carried out works simply miraculous, yet they have done exploits sufficient to bespeak their own unearthly origin, and the new powers which had 30 come into the world. The revival of letters by the energy of Christian ecclesiastics and laymen, when everything had to be done, reminds us of the birth of Christianity itself, as far as a work of man can resemble a work of God.