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The more you know, the more you realize you don't know.

Ideas are everywhere, but knowledge is rare.

What can be said at all can be said clearly; and whereof one cannot speak thereof one must be silent.

我們都是自己記憶的囚徒。

Invert, always invert: Turn a situation or problem upside down. Look at it backward.

When you’re in a tough spot, remember why you started.