量子场论的发展表明，真空并非空无一物，而是潜能的海洋。

小说是一面镜子，反映了人类存在的复杂性。

The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome given the alternatives.

阅读是一种共情的行为。

The future of medicine lies in understanding the molecular basis of disease.

真金不怕火炼。