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寫作是一次進入未知的旅程，一次對真理和美的追求。

介導疼痛的分子非常古老，揭示了這種感覺在進化中的深遠根源。

The individual's biography is shaped by the historical and social context in which it is embedded.

The horizon is the ultimate architectural reference.

The complexity of a learning problem is often determined by the size and structure of the hypothesis space.

The knowledge that you have emerged wiser and stronger from setbacks means that you are, ever after, secure in your ability to survive. You will never truly know yourself, or the strength of your relationships, until both have been tested by adversity. Such knowledge is a true gift, for all that it is painfully won, and it has been worth more than any qualification I ever earned.