Theorems are the permanent literature of mathematics.
"To write is to carve your soul into words and hope someone recognizes the shape."
我们需要一个保护其公民的欧洲,而不仅仅是一个单一市场。
心灵的宁静是人生最大的财富。
银河系的黑洞是我们研究极端引力的最近实验室。