The amount of text in Copleston's entire 9-volume History of Philosophy series is around 4,000 pages. Here are the philosophers to whom he devotes the greatest number of pages:
Kant - 213
Plato - 139
Aristotle - 133
Aquinas - 121
Hume - 96
Descartes - 90
Hegel - 89
Ockham - 79
Scotus - 76
Locke - 76
Russell - 70
Leibniz - 69
Fichte - 62
Spinoza - 59
Berkeley - 56
Schelling - 55
Suarez - 53
St. Bonaventure - 53
St. Augustine - 51
Hobbes - 51
Sartre - 50
I'm sure one could run these numbers in all kinds of interesting ways....
