Rabbi Shimon bar Yochai hid from the Romans in a cave for thirteen years. There he was visited by heavenly beings, by Elijah the prophet and even by Moses. It was there that he composed the holy Zohar. When he left the cave and came to a town, he did not say, “Let me enlighten you with the inner light of Torah, the light that has been hidden since the six days of creation.” He said, “What is there in your town that I can fix?” Whatever knowledge a human being is given in this world, whatever wisdom, enlightenment or...