Answer: No, when a person speaks from within his soul, then he is beautiful. It is immediately felt that he is a serious person internally: with intensity, with knowledge, with understanding, with some kind of illumination—with this, he is beautiful.
After all, we don’t judge art and science according to their appearances. We judge them according to the potential genius that is found in them. We admire scientists without any connection to their external appearance because they reveal the secrets of existence to us.
From the Kabbalah Lesson in Russian 12/20/15