Fun fact: Evariste Galois made major contributions to math in his teens, before dying in a duel at age 20.
It is hard to overdramatize the events of Galois' life. He lived during a revolution, he went out into the streets to protest and fight, he was arrested multiple times for his outrageous political speech, and he laid down his life for his political beliefs. A friend of mine who survived a chronic and often-fatal disease in his teens used to quip, "Well, if I were Galois, I'd have already made my best contributions and died by now." Galois indeed burned fast and bright.
https://www.maa.org/sites/default/files/pdf/upload_library/2...