The five "books" (just one in our sense of the word "book") "Tusculan Disputations" of Cicero are dedicated to existential questions like "Is dead something evil?" oder "Do wise men have emotional perturbations?" The answer of the first question cited here is crucial for emotional states, for instance fear of death. In this way this first question is subordinate to the second. M. Graver picked therefore Book 3 and 4, which are concerning with grief and emotion in general, as central parts of Ciceros work and translated them carefully into English, with useful subdivisions and an excellent commentary. Of extraordinary value is the introduction, which enables the reader to get insight into the discussions of the various schools of philosophers, and most surprising is the collection of material in Appendix A to D, which shows part of the sources (we dont have all sources at hand), which Cicero used for his - in general - independent work. You can recommend this edition especially to students who are concerned either in ancient philosophy or in historical studies of psychology.