在数学中,提出问题的艺术必须比解决问题更有价值。
成长的唯一途径就是挑战自己。
The greatest threat to our forests isn't logging—it's indifference.
The more you know, the more you can imagine. The more you imagine, the more you can know.
工具变量的美妙之处在于它们让我们以新的视角看世界。
上天安排我福分浅薄,我就培养高尚道德去迎接它;上天安排我身体劳顿,我就修炼精神安逸去弥补它;上天安排我遭遇艰危,我就努力实现政治理想去沟通它;上天安排我境况困苦,我就力求精神愉快去疏导它。
I’m not a guy that’s going to let my love for the grind down.