The essays found within this book on the Republic, Protagoras, Meno, Gorgias and Philebus, are taken wholly from the text of Plato. They develop views diametrically opposed to those of Mr. Grote. The opinions of the great historian are identical with the tenets, which Plato spent his life in opposing, and they exhibit modem positivism in its most improved form. The discussion is limited to the dialogues specified, as they contain all that is necessary for understanding the ethics of Plato.