I have recently been reading a biography of Auguste Comte. Tomorrow is, according to Comte's Positivist Calendar, Homer 20, devoted to Lucian, while today is devoted to Juvenal. So here are links for Juvenal and Lucian. I particularly recommend the latter; he manages to be both philosophical and enjoyable to read. One wishes that better philosophers had had his literary ability.
Juvenal's first three satires at the Ancient History Sourcebook.
The Fowler edition of Lucian's works at sacred-texts.com. For philosophically-minded readers I particularly recommend the Hermotimus; for historians, The Way to Write History. Other good ones, and possibly of wider interest, are the Sale of Creeds, Charon, and the Icaromenippus.