'And therefore,' says this organizer of the science of nature, who keeps an eye on practice, in _his_ speculations, and recommends to his followers to observe his lead in that respect, at least, until the affairs of the world get a little straighter than they were in his time, and there is leisure for _mere_ speculation,--'And, therefore,' he resumes, having noted these remarkable differences in the natural and original dispositions of men,--and certainly there is no more curious thing in science than the points noted, though the careful reader will observe that they are not curious merely, but that they slant in one direction very much, and towards a certain kind of practice. 'And, therefore,' he resumes, noticing that fact, 'I _cannot sufficiently marvel_, that this part of knowledge, touching the _several characters_ of _natures_ and _dispositions_ should be omitted _both_ in MORALITY and POLICY, considering that it is of _so great_ ministry and suppeditation to them BOTH.' ['The _several characters_.' The range of difference is limited. They are comprehensible within a science, as the differences in other species are. No wonder, then, 'that he cannot sufficiently marvel that this part of knowledge should be omitted.'] But in neither of these two departments, which he here marks out, as the ultimate field of the naturalist, and his arts, in neither of them unfortunately, lies the practice of mankind, as yet so wholly recovered from that 'lameness,' which this critical observer remarked in it in his own time, that these observations have ceased to have a practical interest. And having thus ventured to express his surprise at this deficiency, he proceeds to note what only indications he observes of any work at all in this field, and the very quarters he goes to for these little accidental hints and beginnings of such a science, show how utterly it was wanting in those grandiloquent schools of philosophic theory, and those magisterial chairs of direction, which the author found in possession of this department in his time.