Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them - and then, the opportunity to choose.

"The journey of a thousand miles begins with a single step."

"In every equation, there is a story waiting to be told."

当碰到了爱情，每个人都成了诗人。

不要害怕失败，害怕的是你连尝试的勇气都没有。