不能成为好仆人的人,也不会成为好主人。
He who is not a good servant will not be a good master.
Three grand essentials to happiness in this life are something to do, something to love, and something to hope for.
真正的创新来自于质疑我们认为已知的东西。
The limits of my language mean the limits of my world.
The most formidable weapon against errors of every kind is reason.