What Is Pain?

Question: You claim that if you hurt a friend, then you hit the whole system. What is pain?

Answer: Pain is a sensation of lack of filling in a desire. There are different thresholds of the sensation of lack of filling. A serious threshold causes pain.

Question: What does it mean to hurt a friend in the ten.

Answer: If it is a good ten, then you hurt your friend if you do not realize yourself in it.
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From the Kabbalah Lesson in Russian 5/21/17