Whereas modern Mandarin is merely perversely hard, classical Chinese is deliberately impossible. Here's a secret that sinologists won't tell you: A passage in classical Chinese can be understood only if you already know what the passage says in the first place. This is because classical Chinese really consists of several centuries of esoteric anecdotes and in-jokes written in a kind of terse, miserly code for dissemination among a small, elite group of intellectually-inbred bookworms who already knew the whole literature backwards and forwards, anyway. An uninitiated westerner can no more be expected to understand such writing than Confucius himself, if transported to the present, could understand the entries in the "personal" section of the classified ads that say things like: "Hndsm. SWGM, 24, 160, sks BGM or WGM for gentle S&M, mod. bndg., some lthr., twosm or threesm ok, have own equip., wheels, 988-8752 lv. mssg. on ans. mach., no weirdos please."