Ne pleure pas, Alfred! J'ai besoin de tout mon courage pour mourir à vingt ans!
(Don't cry, Alfred! I need all my courage to die at twenty!)
That was Evariste Galois' final remark to his younger brother Alfred before he died of severe abdomen injury (he was fatally shot in the abdomen in a duel).
A math genius, legend has it that Galois knew beforehand of his impending death. The night before his duel, he poured all his mathematical thoughts onto paper which has an everlasting effect on mathematics.
The theory that Galois outlined in these papers is now called Galois theory.
His duel was likely a staged suicide. One writer succinctly described his duel as the result of his unhappiness with his surrounding events.
"He was weary of life, because of his unhappy love affair, his fruitless efforts for gaining recognition for his mathematical work, his financial and work situation..."