Why should a dog, a horse, a rat, have life, and thou no breath at all?

幸运所需要的美德是节制，逆境所需要的美德是坚韧。

Suffering is the fire that purifies the soul.

I’m very fearless—not in a reckless way, but in a way that is authentic to who I am.

The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

在生物圈的地质历史演化中，智慧圈是众多阶段的最后一个阶段。