宇宙是一个不断变化和演变的地方，我们只是其中的一小部分。
The universe is a place that is constantly changing and evolving, and we are just a small part of it.
The best way to create interest in a subject is to render it worth knowing, which means to make the knowledge usable.
Leadership means making tough decisions today that will benefit future generations.
The artist's greatest tool is not the brush or chisel, but the mind.