法律效力的概念对于理解法律的本质至关重要。

我不会让世界决定我的快乐。

生活是一系列变成记忆的时刻。

It is not enough to observe and experiment, theorize and calculate. One must also imagine.

Leadership is about making tough decisions today that will benefit generations to come.

游戏是艺术与技术的结合，缺一不可。