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Cada libro es una puerta a un mundo desconocido, una invitación a explorar lo desconocido.

不要讓任何人掩蓋你的光芒。

The most important actions are never comfortable.

Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.

Technology alone won't solve our challenges—it's how we apply it that matters.