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數學不僅僅是關于數字、方程、計算或算法：它是關于理解的。

Die Hoffnung ist der Schlüssel zum Leben.

I think the key to success is to be passionate about what you're doing.

The most beautiful curves on a woman are her smiles.

People with a sense of fulfillment think it a good world and would like to conserve it as it is, while the frustrated favor radical change.

"I am not a voice, I am a word."