有人说：“如果用恩德来回报别人对自己的怨仇，行不行呢？”孔子说：“这样的话，你将用什么来报答别人对你的恩德呢？不如以公正对待怨仇，以恩德报答恩德。”
Mathematics is the foundation upon which we build our understanding of the world, and it is through this understanding that we can solve the most complex problems.
The secret to success? There is no secret—just hard work and persistence.
The propensity to truck， barter， and exchange one thing for another is common to all men， and to be found in no other race of animals.
