技术不仅仅是一种工具。它可以赋予学习者以前可能没有的声音。

The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

要真正具有远见，我们必须将想象力扎根于具体的现实，同时想象超越现实的可能性。

质量不是偶然；它是一种决定。