除非你付出努力，否则梦想不会实现。

The light constantly changes, and that alters the atmosphere and beauty of things every minute.

The only way to keep improving is to keep pushing yourself.

当言语停止时，音乐开始了。

The first step towards philosophy is incredulity.

The most important thing is to avoid losing money.

经济发展理论研究的是经济系统如何产生不断改变它的力量。