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真相很少是純粹的，也從不簡單。

All changes, even the most longed for, have their melancholy; for what we leave behind us is a part of ourselves; we must die to one life before we can enter into another.

投資于環保技術，就是投資于未來。

The little things are infinitely the most important.

數學家的工作大多是孤獨的追求，但它建立在許多其他人的工作之上。