The divergent series are the invention of the devil, and it is a shame to base any proof upon them.
发散级数是魔鬼的发明,基于它们的任何证明都是一种耻辱。
A mind needs books like a sword needs a whetstone.
追求知识是一场没有终点的旅程,但每一步前进都是一次胜利。
渔业的真正进步是以可持续性衡量的,而不仅仅是短期收益。