George B. Berkeley 
George Berkeley: Three Dialogues Between Hylas and Philonous (Longman Library of Primary Sources in Philosophy) [PDF ebook] 

Part of the "Longman Library of Primary Sources in Philosophy, " this edition of Berkeley’s Three Dialogues Between Hylas and Philonous is framed by a pedagogical structure designed to make this important work of philosophy more accessible and meaningful for readers. A General Introduction includes biographical information on Berkeley, the work’s historical context, and a discussion of historical influences, and a conclusion discusses how the work has influenced other philosophers and why it is important today. Annotations and notes from the editor clarify difficult passages for greater understanding. A bibliography gives the reader additional resources for further study.