The Rebbe Rashab, Rabbi Shalom Dovber, said:

"Even the greatest minds must lay aside their intellect and not be ruled by reason and knowledge, for they are susceptible to being misguided by their intellect to the point that their end may be a bitter one.

"The essential thing in these times of the "footsteps of Moshiach" is not to follow intellect and reason, but to fulfill Torah and mitzvot wholeheartedly, with simple faith in the G-d of Israel."
(L'Chaim)