An invention can be so valuable as to be worthless to the inventor.
Writing is a way of fighting against the absurdity of life.
肉类加工行业有责任为消费者提供安全、高质量的产品。
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。
Money is concerned only with what is common to all, i.e., the exchange value, and it reduces all quality and individuality to the question: How much?