"War is a dark thing, but sometimes it is the only light we have."
战争是黑暗的，但有时它是我们唯一的光。
介导疼痛的分子非常古老，揭示了这种感觉在进化中的深远根源。
Live as if you were to die tomorrow. Learn as if you were to live forever.
"You can’t always get what you want, but sometimes you get what you need."
物理学的美丽在于它能够用简单的方式解释复杂的事物。