a) When a person follows his intelligence and wisdom he can fall into bad mistakes and obstacles and come to great evils, Heaven forbid, as many have stumbled and fallen a great deal through their wisdom; they have sinned and caused many others to sin, may G-d take pity. It was all as a result of their evil wisdom. The essence of Judaism is to go in purity and simplicity without any wisdom, to look at each thing he does that G-d should be there without considering at all his own honour. Only if G-d's honour is enhanced by the action he should do it but if not, he shouldn't do it. Then he will certainly never stumble.
b) When a person falls from his spiritual level, sometimes his fall and descent is very, very great, Heaven forbid. He may fall into very despicable places which are called an aspect of filthy places; and he falls into doubts and despicable, very evil, strange thoughts with many confusions; and his heart becomes dizzy. For the husk makes his heart crooked and surrounds it with crookedness and enormous confusions (and the heart is confused). And even though in such places it is impossible to find G-d, even so, there also there is a great rectification by searching and requesting from there G-d; one needs to ask and request 'Where is the place of His honour?; where is His sanctity?; where is His purity? However much he sees himself as far away from G-d's honour, he should feel regret and ask and search more and more 'Where is the place of His honour?' By this itself, that he regrets, asks for, searches and yearns for G-d's honour, shouting out, asking and searching 'Where is His honour', through this itself he ascends tremendously for he merits by this to rise to a very sublime holiness, which is an aspect of "Where"(see inside). This is the essence of repentance that a person always search and ask 'Where is the place of His honour?' Through this the fall turns into a great ascent. This is an aspect of what it says in all the holy books that a fall is for the sake of the ascent. See inside and understand well for it is very deep.