Pirkei Avot §avot_03_09: Rabbi Hanina ben Dosa said: anyone whose fear of sin precedes his wisdom, his...

Rabbi Hanina ben Dosa said: anyone whose fear of sin precedes his wisdom, his wisdom is enduring, but anyone whose wisdom precedes his fear of sin, his wisdom is not enduring. He [also] used to say: anyone whose deeds exceed his wisdom, his wisdom is enduring, but anyone whose wisdom exceeds his deeds, his wisdom is not enduring.