自然将人类置于两位至高无上的主人——痛苦和快乐的统治之下。
教学不是注满一桶水，而是点燃一把火
The essence of causal inference is to go beyond the data and ask what would happen if we intervene.
在全球化竞争中，我们必须保持开放的心态和学习的态度。
"The advantage of poetry over life is that poetry, if it is sharp enough, may last."