It's easy to perform for others, but hard to perform for yourself.
"We are all just walking each other home."
你不能同时既聪明又恋爱。
A writer is someone who pays attention to the world.
概率论作为一门数学学科,可以而且应该像几何和代数一样从公理出发进行发展。
The simplest materials can contain the most complex meanings.