Wisdom in itself is a great virtue, but there is only a hairsbreadth between wisdom and apostasy. The pious is very close to a fanatical murderer. Generosity alone is a lecher. The integration of all three is a hasid.
R. Naftali of Rophschitz as told in Spiritual Intimacy by R. Zalman Shecter Shalomi
ShikkerDovid 
This made me think of the chayal who has been in the news the past few days.