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No matter what people tell you, words and ideas can change the world.

"Complexity theory teaches us that not all problems are created equal; some are inherently harder than others."

Believe in yourself and anything is possible.

宇宙不僅比我們想象的更奇怪，它比我們能夠想象的還要奇怪。

The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.