In these days it is difficult to find a good Catholic work on the subject of Psychology. Modern works are tainted with the errors of Modernism and Liberalism. This work from the turn of the century (nineteenth to twentieth) is a solid work on this most important subject. The author notes: My aim here, as in the previous editions, has been not to construct a new original system of my own, but to resuscitate and make better known to English readers a Psychology that has already survived four and twenty centuries, that has had more influence on human thought and human language than all other psychologies together, and that still commands a far larger number of adherents than any rival doctrine. My desire, however, has been not merely to expound but to expand this old system; not merely to defend its assured truths, but to test its principles, to develop them, to apply them to the solution of modem problems and to re-interpret its generalizations in the light of the most recent researches. I have striven to make clear to the student of modem thought that this ancient psychology is not quite so absurd, nor these old thinkers quite so foolish, as the current caricatures of their teaching would lead one to imagine: and I believe I have shown that not a little of what is supposed to be Dew has been anticipated, and that most of what is true can be assimilated without much difficulty by the old system. On the other hand, I have sought to bring the scholastic student into closer contact with modern questions; and to acquaint him better with some of the merits of modern psychological analysis and explanation.