Author: Edmund Callis Berkeley

A Treatise Concerning the Principles of Human Knowledge (Commonly called "Treatise" when referring to Berkeley's works) is a 1710 work by the Irish Empiricist philosopher George Berkeley. This book largely seeks to refute the claims made by his contemporary John Locke about the nature of human perception. Whilst, like all the Empiricist philosophers, both Locke and Berkeley agreed that there was an outside world, and it was this world which caused the ideas one has within one's mind, Berkeley sought to prove that the outside world was also composed solely of ideas. Berkeley did this by suggesting that "Ideas can only resemble Ideas" - the mental ideas that we possessed could only resemble other ideas (not physical objects) and thus the external world consisted not of physical form, but rather of ideas. This world was given logic and regularity by some other force, which Berkeley concluded was God.<br /><br />Part 2 of the <i>Treatise</i> was never written. (Wikipedia)

2Three Dialogues between Hylas and Philonous

By George Berkeley

Berkeley uses Hylas as his primary contemporary philosophical adversary, John Locke. A Hylas is featured in Greek mythology and the name Hylas is derived from an ancient Greek word for "matter" which Hylas argues for in the dialogues. Philonous translates as "lover of mind." In The First Dialogue, Hylas expresses his disdain for skepticism, adding that he has heard Philonous to have "maintained the most extravagant opinion... namely, that there is no such thing as material substance in the world." Philonous argues that it is actually Hylas who is the skeptic and that he can prove it. Thus, a philosophical battle of wit begins. (Summary from Wikipedia)

3Treatise Concerning the Principles of Human Knowledge (Version 2)

By George Berkeley

A Treatise Concerning the Principles of Human Knowledge (commonly called Treatise when referring to Berkeley's works) is a 1710 work, in English, by Irish Empiricist philosopher George Berkeley. This book largely seeks to refute the claims made by Berkeley's contemporary John Locke about the nature of human perception. Whilst, like all the Empiricist philosophers, both Locke and Berkeley agreed that we are having experiences, regardless of whether material objects exist, Berkeley sought to prove that the outside world (the world which causes the ideas one has within one's mind) is also composed solely of ideas. Berkeley did this by suggesting that "Ideas can only resemble Ideas" - the mental ideas that we possess can only resemble other ideas (not material objects) and thus the external world consists not of physical form, but rather of ideas. This world is (or, at least, was) given logic and regularity by some other force, which Berkeley concludes is God. ( Wikipedia)

4Mystery at Lovers' Cave

By Anthony Berkeley

Roger and his cousin Anthony are ready to head out on vacation, when a phone call from Scotland Yard sends the duo scuttling down to Hampshire to investigate the possible murder of a Mrs. Vane, who had disappeared on her way to visit a friend. Local police and newspapers reported the death as accidental, but officers at Scotland Yard have their doubts. At this point, they call in amateur sleuth Roger Sheringham to investigate. - Summary by Lynne T

A ROGER SHERINGHAM MYSTERY. When the daughter of a country parson goes missing in London, Roger Sheringham receives a letter from her father pleading for help. As the amateur sleuth investigates, he discovers that the girl is already dead, found hanging from a door by her own silk stocking. It is presumed suicide, but when more young women are found dead in the same manner, questions arise. Was it merely copycat suicide, or will the case lead Sheringham into a maze of murder?

A Roger Sheringham mystery In a typical English country house, a murder is committed. The wealthy Victor Stanworth, who'd been playing host to a party of friends, is found dead in the library. At first it appears to be suicide, for the room was undoubtedly locked. But could there be more to the case? As one of the guests at Layton Court, gentleman sleuth Roger Sheringham begins to investigate. Many come under suspicion, but how could anyone have killed the man and gotten out of the room, leaving it all locked behind? Note: This work contains an anti-Semitic remark, the offensiveness of which both the author and the publisher seem to be unaware.