Mishnah 14 - Chapter 5 - Pirkei Avot

Arba middot beholechei leveit hammidrash. Holech ve'eino oseh, sechar halichah veyado. Oseh ve'eino holech, sechar ma'aseh veyado. Holech ve'oseh, chasid. Lo holech velo oseh, rasha.

There are four types among those who frequent the study-house (bet midrash):He who attends but does not practice: he receives a reward for attendance. He who practices but does not attend: he receives a reward for practice. He who attends and practices: he is a pious man; He who neither attends nor practices: he is a wicked man.

There are four middoth in going to the house of study: going but not doing [i.e., going to the house of study to listen, but not reviewing his learning and not understanding] — the reward of going is in his hand; doing [i.e., learning and reviewing in his study at home], but not going — the reward of doing is in his hand; going and doing — a chasid; not going and not doing — a wicked one.