Grigory Perelman (or Grisha) is a russian math genius, who was the first person to solve one of the Millenium Prize Problems.
Grigory turned down a $1,000,000 prize previously, and is under pressure to accept another $1 million prize.
He’s previously said he’s got everything he wants and has no desire for fame or fortune.
Either way, he goes down in history as doing something that no one else was able to do.
This is a link to the proof of the Poincaré conjecture.
Pretty amazing if you ask me, but then I don’t understand much of what I read at that link.