发明家的职责是使他的工作尽可能对公众有用和可及。
It is the duty of the inventor to make his work as useful and as accessible as possible to the public.
认为对自由的信念总会导致胜利是错误的。我们必须时刻做好失败的准备。如果我们选择自由，那么我们必须准备同它一起消亡。
孩子们从来都不太擅长听长辈的话，但他们从未停止模仿长辈。
Train people well enough so they can leave, treat them well enough so they don't want to.
Look at me.We all have marks on our face. I have this wrinkle here from your first surgery.I have these wrinkles here from your last surgery. This is the map that shows us where we’ve going.And this is the map that shows us where we’ve been.And it’s never ever ugly.
The reason why men enter into society is the preservation of their property.