引力解释了行星的运动，但它不能解释谁让行星运动。

幸福源自内心的平静。

我们之所以能够感知事物的变化，是因为单子在无限的变化中保持了稳定的内在本质。

Compliment people behind their back. It’ll come back to you.

I prefer to supervise the whole operations of the government myself rather than entrust the public business to subordinates.

Man is by nature a reasonable being, but animals, other than man, are by nature instruments of brute force.

我不会让消极情绪偷走我的快乐。