The most important thing in directing is to have a clear vision of what you want to achieve.

The impact of unions on wages and employment is often misunderstood.

未经省察的人生不值得过。

我们可以断言，没有激情，任何伟大的事业都不能完成。

The language of mathematics is universal, transcending cultural and linguistic barriers.

演讲者应让听众充分相信，他已竭尽全力为他们带来愉悦与教益。