Returning, then, to the point from which we set out, I observe that, this being the state of the case as regards abstract science, viz., that we have no quarrel with its anti-Catholic commentators, till they thrust their persons into our Chairs, or their popular writings into our reading-rooms, it follows that, when we contemplate the formation of a Catholic Literature, we do not consider scientific works as among our most prominent _desiderata_. They are to be looked for, not so much for their own sake, as because they are indications that we have able scientific men in our communion; for if we have such, they will be certain to write, and in proportion as they increase in number will there be the chance of really profound, original, and standard books issuing from our Lecture-rooms and Libraries. But, after all, there is no reason why these should be better than those which we have already received from Protestants; though it is at once more becoming and more agreeable to our feelings to use books of our own, instead of being indebted to the books of others. Literature, then, is not synonymous with Science; nor does Catholic education imply the exclusion of works of abstract reasoning, or of physical experiment, or the like, though written by persons of another or of no communion. There is another consideration in point here, or rather prior to what I have been saying; and that is, that, considering certain scientific works, those on Criticism, for instance, are so often written in a technical phraseology, and since others, as mathematical, deal so largely in signs, symbols, and figures, which belong to all languages, these abstract studies cannot properly be said to fall under English _Literature_ at all;—for by Literature I understand Thought, conveyed under the forms of some particular language. And this brings me to speak of Literature in its highest and most genuine sense, viz., as an historical and national fact; and I fear, in this sense of the word also, it is altogether beside or beyond any object which a Catholic University can reasonably contemplate, at least in any moderate term of years; but so large a subject here opens upon us that I must postpone it to another Section. § 3. In its relation to Classical Literature. 1.