系统对给定输入的响应是其历史记录的函数。
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
We shouldn't teach great books; we should teach a love of reading.
成功不是你赚了多少钱，而是你在人们生活中做出的改变。
模形式的算术是理解数论更深奥谜团的关键。
The young do not know enough to be prudent, and therefore they attempt the impossible – and achieve it, generation after generation.
生活是一场冒险，真正生活的唯一方式就是拥抱未知。