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You can’t live in the world without an idea of the world, but it’s impossible to live in the world with your idea of the world.

Sustainability isn't a choice anymore - it's our responsibility to future generations.

建立在規(guī)則上的自由，才是真正的自由！。

自律的痛苦比后悔的痛苦要好。

It is error only, and not truth, that shrinks from inquiry.

死者比生者更忠實。他們不會改變。