Translations from the Greek of the Following Treatises of Plotinus: Viz. On Suicide, to which is Added an Extract from the Harleian Ms. of the Scholia of Olympiodorus on the Phædo of Plato Respecting Suicide, Accompanied by the Greek Text; Two Books on Truly Existing Being; and Extracts from His Treatise on the Manner in which the Multitude of Ideas Subsists, and Concerning the Good; with Additional Notes from Porphyry and Proclus