The only way to do great work is to love what you do.
做出伟大工作的唯一方法就是热爱你所做的事情。
相关系数的可能误差不是可以从第一原理推导出来的东西,而是必须通过经验找到的。
The political liberty of the subject is a tranquility of mind arising from the opinion each person has of his safety.