the Spartan Constitution. Many scholars consider it a work on the mixed constitution, but this is based on a misinterpretation of the , mentioned in Photius; the word does not refer to Dicaearchus but simply means "relating to a just government". Constitutions – Dicaearchus is said to have written a Spartan Constitution (), Pellenian Constitution (), Corinthian Constitution () and Athenian Constitution (). No fragments survive of these works. The Spartan Constitution was apparently read annually in the council of the ephors in Sparta, in the presence of the Spartan youth. Among his other philosophical works may be mentioned: On the Soul () – Dicaearchus wrote two works on the soul: the Lesbian Dialogue () and the Corinthian Dialogue (), both in three books. The titles refer to the scene where the philosophical dialogue was set, viz. at Mytilene in Lesbos and at Corinth, respectively. The general title for these two works was On the Soul (). In the Lesbian Dialogue, Dicaearchus endeavoured to prove that the soul was mortal. In the Corinthian Dialogue, Dicaearchus argued that the soul has no existence outside the body. The first book presented a discussion of learned men about the soul. In the subsequent two books, a man named Pherecrates argued for the non-existence of the soul. On the destruction of men () – This work collected the causes of human destruction and concluded that man himself was the greatest threat. It is uncertain whether "de interitu hominum" is a book title or merely describes the content of the work. Descent into Sanctuary of Trophonius () – A work which consisted of several books. It appears to have been a work on luxury. The title refers to the oracle of Trophonius in Lebadea, where people who wished to consult the oracle had to descend into a cave. Cicero informs us that he translated a section from this work in his De re publica. The work may have also contained an account of the degenerate and licentious proceedings of the priests in the cave of Trophonius. On Lives () – This was probably a philosophical work on the right way of life. The title is only attested once. The fragments on philosophers (the Seven Sages, Pythagoras and Plato) are usually attributed to this work, though they may belong to other works such as the Life of Greece or the Circuit of the Earth as well.