Continuation of "Path of the Just", Chapter 9, The Factors Which Detract From Zeal (Zrizus). Raize Guttman, 12-11-11

Mesillat Yesharim, Rabbi Moshe Chayim Luzzatto, The Path of the Just, Chapter 9, The Factors Which Detract From Zeal, pp. 97-106, Feldheim Publishers