科学的美丽在于它不断发展和挑战我们对世界的理解的能力。
"The beauty of science lies in its ability to constantly evolve and challenge our understanding of the world."
The aim of art is not to represent the outward appearance of things, but their inward significance.
过去是一个参考的地方，而不是居住的地方。
Food security is the cornerstone of national security.
America has no permanent friends or enemies, only interests.
领导力意味着以同情心和清晰度做出艰难的决定。