The causal approach is about understanding the mechanisms that generate the data.

成功的真正标准不仅仅是利润，还有我们留下的积极影响。

The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.

年轻时你以为会有很多朋友。但随着年龄增长，你意识到一只手就能数得过来。

Art is not a luxury, but a necessity.

Reinforcement is the central factor in the acquisition of new behavior patterns.

A well-designed piece of furniture should tell a story and evoke emotion.