缺乏钱财是所有罪恶的根源。
I'm not gonna sing about love if I don't feel it.
我喜欢狗。你总是知道狗在想什么。它有四种情绪。快乐、悲伤、生气和专注。
The highest goal of education is not knowledge, but action.
The essence of causal inference is to go beyond the data and ask what would happen if we intervene.