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...
Ethics of the Fathers, 4:20