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 includes the most general definitions, axioms, and laws of nature. When these are known (and by my method the task is an easy one), it will be possible to learn particulars and details with little effort, since, in a way, they will already be familiar, and nothing will be necessary but the application of general principles to particular instances. Immediately after this grounding in first principles, which should not occupy more than three months (for they will be speedily learned, being principles of pure reason and easily grasped by the mind), we may proceed to deal with the visible universe, that the marvels of nature (already set forth in the prophysic) may be demonstrated more and more clearly by particular examples. This will be supplied by the Natural Philosophy class.

10. From the essential nature of things we proceed to the more exact investigation of their accidental properties, and this we call the Mathematical class.

11. The pupils must next investigate man himself, viewed as a free agent and as the lord of creation. They must learn to notice what things are in our power, what are not, and how everything must submit to the inflexible laws of the universe.

This they will learn in the fourth year, in the Ethics class. But this must not consist of an historical course or of a mere statement of facts, as in the Vernacular-School. The reasons which underlie each fact must be given, that the pupils may acquire the habit of concentrating their attention on cause and effect. All controversial matter, however, must be carefully excluded from these first four classes, since we wish this to be reserved for the fifth class that follows.

12. In the Dialectic class, after a brief training in the laws of reasoning, the pupils should go over the whole field of natural philosophy, mathematics, and ethics, and carefully investigate any weighty points that are usually discussed by learned men. This gives an opportunity for explaining the cause and the nature of the controversy, for distinguishing between the thesis and the antithesis,