所以富贵的人极其奢侈,二孤儿寡妇却受饥挨饿,虽然想天下不乱,也不可能。国君若真的希望天下太平而不希望天下大乱的话,如果要吃喝,就不能不节俭。 
The best way to learn mathematics is to do mathematics.
Music is the voice of the soul.
"In the world of investing, the ability to adapt is more important than the ability to predict."
词汇不仅仅是声音或符号,而是事实的标志。