Rabbi Yossei the son of Judah of Kfar HaBavli would say: One who learns Torah from youngsters, whom is he comparable to? To one who eats unripe grapes and drinks [unfermented] wine from the press. One who learns Torah from the old, whom is he comparable to? To one who eats ripened grapes and drinks aged wine. Said Rabbi Meir: Look not at the vessel, but at what it contains. There are new vessels that are filled with old wine, and old vessels that do not even contain new wine.