The physicist must have a vivid imagination, but it must be disciplined by rigorous logic.
物理学家必须拥有生动的想象力，但必须受到严格逻辑的约束。
States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.
最好的投资是投资那些正在创造未来的人。
"The deeper the silence, the louder the words."
Your past does not define your future.
Always look for the positive in every situation.