Rabbi Shimon fled to the cave to escape a death sentence for publicly criticizing Roman culture. According to folk tradition, during his twelve years of isolation, he engaged in mystical meditation and wrote the Zohar, the central work of Kabbalah.
"Tu" (the Hebrew abbreviation of 15th) in the month of Shvat was set (Hillel's opinion generally overrules Shammai's) as the beginning of the tithable year for tree fruit: Calculating the tithe on fruit starts again for fruit that sets after that date.
Here is the quintessential Jewish question: How do we emulate God? We are told that we were created by God. We are told that we have a divine spark within us.