Riddle of the Sphinx

The Riddle of the Sphinx is a personal riddle which is revealed by a Sphinx to anyone who asks. After learning of their riddle, a person's intrigue in the meaning and solution usually becomes so overwhelming that they either solve it or die in a frenzy.

The riddle is always of a personal nature, and about a central theme of the riddled's life. Reaching the answer more often than not requires extensive personal development, and an epiphany. Upon solving the riddle, a great power is gifted to the riddled. Though only a few people attempt the riddle, about half of them eventually solve it.

Known Riddles

 * Lucky Tom (solved): Why are you here?
 * Cronicky (solved): What is the smallest thing?
 * Zhang Wei (unsolved): Is there a counter-example to the Riemann Hypothesis?