The Mahayana faith and wisdom

I have a few questions about "wisdom", which I would personally define as it appears in Zhiyi's book the Great Calming and Contemplation, in the section on the six identities > If one is endowed with both wisdom and faith, then upon hearing that a > single thought-moment is identical with the positive [aspect that are > conducive to bodhicitta], faith will keep one from denigrating [what > one does not understand], and wisdom will keep one from being > apprehensive [about one’s inability to attain enlightenment]. [In this > case,] both the beginning and later [stages] are positive. If one does > not have faith, then [one despairs i] the exalted levels of the > sage are not part of one’s own wisdom, 344 and if one does not have > wisdom, one becomes arrogant and thinks that one is already equal to a > Buddha. IIs it possible to be on the path without wisdom? Is it possible to advance along it, even to attain complete, and perfect enlightenment, without wisdom? And if the latter is in **any** way the case, then how so, and why would the practitioner have to fall "back" into complete ignorance in order have any semblance of enlightenment? Forgive me if I speak crazily :) !!