The true value of a forest cannot be measured in board feet alone.
森林的真正价值不能仅用板英尺来衡量。
数学的美在于它能够用一种既精确又普遍的语言来描述宇宙。
你必须享受其中。如果你不开心,那有什么意义?
The concept of infinity is not just a mathematical abstraction, but a physical reality.