The magic number 150 suggests that the size of our social networks is limited by the size of our brains.

Investing in employee training isn't an expense—it's the foundation of quality and operational excellence.

Every decision we make in extraction echoes for generations.

死者既已安葬，活着的人就不要长久地哭泣，而应该尽快做事，每个人都做自己能做的事，并用来使大家互利。