Sorrow is hushed into peace in my heart like the evening among the silent trees.
我相信可互换零件的原理将在未来制造业的进步中发挥巨大作用。
理论物理学的美在于它能够揭示支配宇宙的隐藏对称性和模式。
How many roads must a man walk down before you call him a man?