Quality is free. It's not a gift, but it's free. What costs money are the unquality things -- all the actions that involve not doing jobs right the first time.

心灵的首要职责是让有机体继续运转。

译文：人情世故就像流水一样有高下之别，世事就像白云一样卷起展开，变化无常。赏析：我们在社会上立足，总会遇到这样或那样的糟心事和烦心人，但和生命健康比起来，这些不算什么。世事无常，人情淡薄，我们顺其自然即可。

We live in a world where the past is always present, and the present is always haunted by the past.

你的大脑就像一块肌肉，越用越强。