兒童有著他自己的人格，他自身具有創(chuàng)造精神的美和尊嚴(yán)。這種美和尊嚴(yán)是永遠不能磨滅的，所以他的純潔而非常敏感的心靈需要我們最審慎的愛護。
君子作戰(zhàn)雖然布陣,但還是以勇敢為本。
Every mathematical problem has a solution; you just need to find the right perspective.
So go ahead. Fall down. The world looks different from the ground.
"Randomized experiments are the gold standard for causal inference, but they are not always feasible."