Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is most important.

Happiness is brief. It will not stay. God batters at its sails.

The truth is: the natural world is changing. And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it.

不沉溺于过去，专注未来。

预测未来的最好方式就是去创造它。

The best way to predict the future is to invent it.

释义：与敌人交战之前，必须仔细分析和了解敌人的情况，然后才能制定作战计划和出兵，以确保行动的成功。

我不是榜样，我只是我自己。