
There is a story, found in the Jewish Talmud, that four great rabbis entered the orchard (Hebrew: pardes) known as the Kabalah. These were mature and wise men. Yet one, unable to deal with what he experienced, died. Another became a heretic. The third went insane. Only the famous Rabbi Akiva (or Akiba) "entered in peace and emerged in peace."
There is one aspect of the Kabalah that seems to bring out the crazies. Specifically, that aspect is the manipulation of letters. There are three primary methods of letter manipulation:
Gematria: letters are given numerical values and words or phrases of equal sums replace each other in passages, giving new meanings to those passages
Notarikon: