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The line between good and evil is often blurred.
Everything that happens once can never happen again. But everything that happens twice will surely happen a third time.
The great powers are always searching for opportunities to gain power at the expense of their rivals, which makes them inherently aggressive.
I think that the thing that makes mathematics worthwhile is the fact that it has this incredible structure that you can explore and discover.
The first essential component of social justice is adequate food for all mankind.