虽然说是爱它,其实是害它;虽然说是为它担忧,其实是与它为敌
To write is to confront the ghosts of the past and give them a voice in the present.
写作文章的根本,必须立足于道德,然后才能谈论文章。
The essence of causal inference is to go beyond the data and ask what would happen if we intervene.