书籍是最安静、最恒久的朋友；它们是最易接近、最睿智的顾问，也是最耐心的老师。
"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."
逃避痛苦的唯一方法是拥抱它。
Childhood is fleeting, but the right book can make it last a little longer.
Success is not about the money you make, it's about the difference you make in people's lives.
The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.
Never invest in any idea you can't illustrate with a crayon.