极少有人能在首次推介中完成销售。仅仅因为你对一些事物有信念，并不意味着其他人也愿意接受。你需要能够一次又一次坚定地推销你的愿景。大多数人不喜欢改变，所以你需要说服他们为什么要接受改变。不要因为畏惧而不去争取自己想得到的东西。
To travel is to write, and to write is to travel.
Give the pupils something to do, not something to learn; and the doing is of such a nature as to demand thinking; learning naturally results.
The beauty of physics lies in its ability to reveal the profound simplicity underlying the apparent complexity of the universe.
