It is sometimes said, that the revealer of a true religion, does not come amongst men for the sake of teaching truths in science, or correcting errors in science. Most justly is this said: but often in terms far too feeble. For generally these terms are such as to imply, that, although no function of his mission, it was yet open to him-- although not pressing with the force of an obligation upon the revealer, it was yet at his discretion--if not to correct other men's errors, yet at least in his own person to speak with scientific precision. I contend that it was _not_. I contend, that to have uttered the truths of astronomy, of geology, &c., at the era of new- born Christianity, was not only _below_ the purposes of a religion, but would have been _against_ them. Even upon errors of a far more important class than any errors in science can ever be,-- superstitions, for instance, that degraded the very idea of God; prejudices and false usages, that laid waste human happiness, (such as slavery and many hundreds of other abuses that might be mentioned,) the rule evidently acted upon by the Founder of Christianity was this-- Given the purification of the fountain, once assumed that the fountains of truth are cleansed, all these derivative currents of evil will cleanse themselves. And the only exceptions, which I remember, to this rule, are two cases in which, from the personal appeal made to his decision, Christ would have made himself a party to wretched delusions, if he had not condescended to expose their folly. But, as a general rule, the branches of error were disregarded, and the roots only attacked. If, then, so lofty a station was taken with regard even to such errors as had moral and spiritual relations, how much more with regard to the comparative trifles, (as in the ultimate relations of human nature they are,) of merely human science! But, for my part, I go further, and assert, that upon three reasons it was impossible for any messenger from God, (or offering himself in that character,) for a moment to have descended into the communication of truth merely scientific, or economic, or worldly. And the reasons are these: _First_, Because it would have degraded his mission, by lowering it to the base level of a collision with human curiosity, or with petty and transitory interests. _Secondly_, Because it would have ruined his mission; would utterly have prostrated the free agency and the proper agency of that mission. He that, in those days, should have proclaimed the true theory of the Solar System and the heavenly forces, would have been shut up at once--as a lunatic likely to become dangerous. But suppose him to have escaped _that_; still, as a divine teacher, he has no liberty of caprice. He must stand to the promises of his own acts. Uttering the first truth of a science, he is pledged to the second: taking the main step, he is committed to all which follow. He is thrown at once upon the endless controversies which