In saying that someone did something， we may be doing something ourselves.

他一直太忙以至于无法生活，现在他太忙以至于无法死去。

Safety is not just a policy, it's a culture that must be embedded in every operation we undertake.

The greatest weapon against stress is our ability to choose one thought over another.

数学中发现的快乐是无与伦比的。