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The best ideas often come from unexpected places.

A book is a version of the world. If you do not like it, ignore it; or offer your own version in return.

The most sustainable product is the one that lasts a lifetime.

心理學必須研究思維和行為的適應功能。

Start where you are, with what you have. Make something of it. Never be satisfied.

The key to performance is to keep the hot data in memory.