艺术中没有错误，只有意外的转折。
There’s no such thing as a mistake in art—only unexpected turns.
当市场下跌时，你轻易的将好东西打折变卖，但是一旦市场向上，再想买回来，难之又难。
"The only thing worse than being talked about is not being talked about."
学习数学的最好方法就是做数学。