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A poet is a nightingale, who sits in darkness and sings to cheer its own solitude with sweet sounds.
The truth is a weapon, and like any weapon, it can be used for good or ill.
Curiosity and perseverance can change the world.
If you're an artist, you try to make sense out of one thing or another.
Persistence is key in mathematical research; many great results come from looking at the same problem from different angles over and over again.