The most elegant proofs are those that reveal the heart of the problem with clarity.
You are never too old to set another goal or to dream a new dream.
新观点总是被怀疑和通常反对,原因只是因为它们尚未变得普遍。
"In the middle of difficulty lies opportunity."
The more you know, the more you see.
捕鱼技术的创新必须与保护工作齐头并进。
写作的行为是一种乐观的行为。如果你觉得它不重要,你就不会费心去做。