The Dialogues were an important medium for the spreading of Greek philosophical theories to the Roman world and to subsequent ages. This selection is of complete, not excerpted, dialogues.The Dialogues were an important medium for the spreading of Greek philosophical theories to the Roman world and to subsequent ages. This selection is of complete, not excerpted, dialogues.Preface INTRODUCTION BIBLIOGRAPHY FOUR DIALOGUES: De Vita Beata De Tranquillitate Animi De Constantia Sapientis Ad Helviam Matrem de Consolatione