One should forgive one's enemies, but not before they are hanged.
We are not selling water, we are selling health and quality of life.
我总是尽力做到最好,但这并不容易。
Mathematics is the foundation upon which all science is built.
培养造就冲淡清虚的品格,便是一生的学问;丢弃无端的烦脑,心境又是多么安静平和。