我用血写作,因为我记得流血的感觉。
工具变量的美妙之处在于它们让我们以新的视角看世界。
The challenge is to express the most with the least.
书籍是桥梁——连接人与人、地方与地方、时代与时代。
Insofar as a thing is in harmony with our nature, it is necessarily good.