知识的每一次进步都会带来新的问题和新的困难。
There are some things one remembers even though they may never have happened.
没有分析,就没有合成;没有合成,也就没有分析。
The only way to be truly satisfied is to do what you believe is great work.
The best solutions often come from listening to those who work the land.
The artist must be a child of the earth.