Question: You said that we can evaluate evil either according to our sensations or the desire to reach the goal. Can evil with a purpose be regarded as an ascent?
Answer: If I evaluate the evil from the point of view of the goal, I say, “It’s okay that my desire to enjoy (the body) suffers” since the suffering that I feel in the “body” (my desire to enjoy) helps me rise above it, restrict it, establish a screen over it, and advance.
Concealment must exist between the Creator and me in any case as I cannot reveal my desire to enjoy to Him. Either the Creator conceals Himself from my desire, or I conceal my ego from His Light (pleasure). To the extent that I conceal my ego, the Creator reveals Himself to me above my desire to enjoy, and then I feel Him. This is how we advance.
From the 1st part of the Daily Kabbalah Lesson 9/16/10, “What is the Matter of Sufferings in the Work”