矿工的安全是任何生产报告的第一行。

心理学是研究心理过程的科学。

The purpose of a habit is to remove that action from self-negotiation. You no longer expend energy deciding whether to do it. You just do it. Good habits can range from telling the truth， to flossing

教师之为教，不在全盘授予，而在相机诱导。

The boundary between physics and mathematics is not as clear-cut as we might think.