In this so-called plan for the advancement of learning, the author proceeds, as we all know, by noticing _the deficiencies_ in human learning as he finds it; and everywhere it is that radical deficiency, which leaves human life and human conduct in the dark, while the philosophers are busied with their controversies and wordy speculations. And in that part of his inventory where he puts down as wanting a science of practice in those every-day affairs and incidents, in which the life of man is most conversant, embodying axioms of practice that shall save men the wretched mistakes and blunders of which the individual life is so largely made up; blunders which are inevitable, so long as men are left here, to natural human ignorance, to uncollected individual experience, or to the shrewdest empiricism;--in this so original and interesting part of the work, he takes pains to tell us at length, that that which he has before put down under the head of '_delivery_' as a point of form and method, becomes here essential as a point of substance also. It is not merely that he will have his axioms and precepts of direction digested from the facts, instead of being made out of the teacher's own brains, but he will have THE FACTS themselves, in all their stubbornness and opposition to the teacher's preconceptions, for the body of the discourse, and the precepts accommodated thereto, instead of having the precepts for the body of the discourse, and the facts brought in to wait upon them. That is the form of the practical doctrine.