In the world of physics, we often find that the simplest questions are the hardest to answer.

"Language is both a weapon and a wound; it depends on who holds the pen."

可持续发展不再是可选项；它是任何希望在未来蓬勃发展的企业的必需品。

可持续性不再是可选项，而是任何想在21世纪蓬勃发展的企业的必需品。

患者不是统计数据；他们是我们每天突破界限的原因。

Death is the only truly serious philosophical problem.