I used to know a man who was writing a Ph.D. thesis on Cicero’s opinions about friendship, and he always quoted a text that I never bothered to read: Laelius, vel De Amicitia. I was wrong. Now that my friend Bill Thayer has made that text (in translation) available online, I have hurried to read it, and I discovered a text that was nicer than I expected. The Latin text can be found here. (The Ph.D. thesis BTW, was apparently never finished.)
Also available: the translation of Cicero’s famous treatise Cato the Elder on Old Age (Latin), the article on the temple of Hercules Custos from Platner’s Topography of Ancient Rome, and the Greek texts of several speeches by Dio of Prusa: 19, 42, 58, 63, 67, 68, 69, 70, 75, 76.