The Chozeh of Lublin once admonished his disciple, Rabbi Naftali of Ropshitz for his cleverness. The Torah says “Tamim Te’hyeh im Hashem Elokecha”, one should walk simply with Hashem. Why, then, do you act with such craftiness?
“To the contrary”, answered Rabbi Naftali. “This verse is the very reason I do so. One requires a great deal of wisdom in order to ‘walk simply with God’!”