If there is to be any one aspect of Father Copleston's work for which I am grateful (and there is, in a sweeping yet quite comprehensive survey as he graced the world with), it would be his work on Ockham, and consequently the nominalism which resulted from his work. Now that I have stated that I am quite enthralled with William of Ockham, let me know state some aspects about the book.
I should confess, first of all, that I was rather apprehensive about picking up this volume of his History of Philosophy. The reason is rather childish, but it is because, well, it is on late medieval philosophy. And, granted, I struggled to make it through the final chapters on Francis Suarez. But the history of modern philosophy, beginning particularly with Descartes, is often misrepresented by a failure to appreciate the philosophic works of this time (which, in this work, is approximately the late 13th to the mid-15th centuries). (For example, I read Cajetan's Commentary on Being and Essence in conjunction with Descartes's Meditations on First Philosophy, and discovered some terms employed by Cajetan which were repeated, not coincidentally, I believe, by Descartes. Keep in mind that Descartes was educated, for eight or nine years, at Le Fleche, a Jesuit boarding school, and would have been well-educated not only in Thomism, but also commentators on Thomas Aquinas and, naturally at the time, but in traditional Roman Catholic thought to guard against the encroachments of Protestantism.)
This said, the volume is divided into three main parts: Ockham and the Ockhamist movement, Renaissance philosophy, and the Scholasticism of the Renaissance. The former is, of course, occupied mostly by Ockham, with some considerations to nominalists after him; the latter is mostly on Francis Suarez. The second part, however, will, for many readers, be the most rewarding. It discusses the new-found interest in Plato (who had lost influence following the Aristotelianism of Aquinas), and the scientific movement with a discussion of Francis Bacon.
This last discussion, on Bacon, is the most disappointing aspect of the work. I felt that more attention should have been devoted to Bacon, while chapters on, for instance, speculative mysticism and two rather lengthy and detailed chapters on Suarez were not necessary. I would certainly say that Suarez, and most definitely the mystics, did not have the influence upon philosophy that Bacon exerted. This is the greatest complaint which, I think, can be levelled upon this particular volume.
Yet, of course, one cannot complain too much of a mind so erudite and a hand that worked so long and hard to provide his students, and future generations of students, a comprehensive history of philosophy; and the individual who believes that this is a volume which can be skipped over must simply reconsider that (poor) decision.