Books like The Empiricists: Locke: Concerning Human Understanding; Berkeley: Principles of Human Knowledge & 3 Dialogues; Hume: Concerning

This is a useful condensation of the three pillars of "empiricism", such as it is. But (1) you can get all their work from creative commons sources. So, paying for this isn't necessary; and, (2) the creative commons sources are complete, whereas this is abridged. So, paying for this is ill-advised, anyway. About the only thing worth having this book for, is Richard Taylor's introduction. Which is why, ultimately, I gave this 3 stars.