The boasted influence of mathematical studies is nothing to it; for in mathematical processes, none of the real difficulties of correct ratiocination occur. It is also a study peculiarly adapted to an early stage in the education of philosophical students, since it does not presuppose the slow process of acquiring, by experience and reflection, valuable thoughts of their own. They may become capable of disentangling the intricacies of confused and self-contradictory thought, before their own thinking faculties are much advanced; a power which, for want of some such discipline, many otherwise able men altogether lack; and when they have to answer opponents, only endeavour, by such arguments as they can command, to support the opposite conclusion, scarcely even attempting to confute the reasonings of their antagonists; and, therefore, at the utmost, leaving the question, as far as it depends on argument, a balanced one. During this time, the Latin and Greek books which I continued to read with my father were chiefly such as were worth studying, not for the language merely, but also for the thoughts. This included much of the orators, and especially Demosthenes, some of whose principal orations I read several times over, and wrote out, by way of exercise, a full analysis of them. My father's comments on these orations when I read them to him were very instructive to me. He not only drew my attention to the insight they afforded into Athenian institutions, and the principles of legislation and government which they often illustrated, but pointed out the skill and art of the orator--how everything important to his purpose was said at the exact moment when he had brought the minds of his audience into the state most fitted to receive it; how he made steal into their minds, gradually and by insinuation, thoughts which, if expressed in a more direct manner, would have roused their opposition. Most of these reflections were beyond my capacity of full comprehension at the time; but they left seed behind, which germinated in due season. At this time I also read the whole of Tacitus, Juvenal, and Quintilian. The latter, owing to his obscure style and to the scholastic details of which many parts of his treatise are made up, is little read, and seldom sufficiently appreciated. His book is a kind of encyclopaedia of the thoughts of the ancients on the whole field of education and culture; and I have retained through life many valuable ideas which I can distinctly trace to my reading of him, even at that early age. It was at this period that I read, for the first time, some of the most important dialogues of Plato, in particular the _Gorgias_, the _Protagoras_, and the _Republic_. There is no author to whom my father thought himself more indebted for his own mental culture, than Plato, or whom he more frequently recommended to young students. I can bear similar testimony in regard to myself. The Socratic method, of which the Platonic