Great companies are built on great cultures, not just great products.

【译文】力气单薄就不要去背负重物，说话没分量就不要规劝别人。没有钱就不要到人群中去，遇到危难千万别去求亲戚。

不敢冒犯别人的人不可能诚实。

The beauty of instrumental variables is that they allow us to see the world in a new light.

用鲜血写就的安全规程必须像圣典般被虔诚遵守。

"Memory is a strange thing, it doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter, who adds and subtracts elements according to his own rules."