当天赋不努力时，勤奋会击败天赋。

他认为，人不抱希望是很傻的。

没有真理，只有感知。

I will tell you what I will do and what I will not do. I will not serve that in which I no longer believe whether it call itself my home, my fatherland, or my church: and I will try to express myself in some mode of life or art as freely as I can and as wholly as I can, using for my defence the only arms I allow myself to use—silence, exile, and cunning.

理解自然的道路往往是通过统一看似不同的概念。