L-函数的算术是窥探数论灵魂的窗口。
The arithmetic of L-functions is a window into the soul of number theory.
The only way to tell the truth is to speak without a mouth.
释义：不考虑在安逸的环境中要想到危难，用节俭来戒除奢侈，不使自己的道德处于深厚的境界，不能使自己的情欲战胜物质欲望，这就像砍伐树木的根却想要树木长得茂盛，堵塞水的源头却想要水流得长远一样荒谬。