The value of an economic model lies in its ability to explain and predict.
Mathematics is the foundation upon which the edifice of science is built.
成功者与其他人之间的区别不是缺乏力量,也不是缺乏知识,而是缺乏意志。
A man who does not keep his word is no man at all.
数字世界应该对所有人开放,无论背景或能力。