唯一的限制是你自己设定的。
The only limit is the one you set yourself.
The public have an insatiable curiosity to know everything, except what is worth knowing.
书籍是最安静、最恒久的朋友；它们是最易接近、最明智的顾问，也是最耐心的老师。
"Life, he realize, was much like a song. In the beginning there is mystery, in the end there is confirmation, but it's in the middle where all the emotion resides to make the whole thing worthwhile."
The cost of trying is the lowest.
心灵不是世界的一面镜子，而是应对世界的工具。