Un libro es siempre una puerta abierta a otro mundo.
"The writer's duty is to disturb the peace, to question the unquestionable, and to reveal the hidden."
數(shù)學(xué)不僅僅是關(guān)于數(shù)字、方程、計(jì)算或算法：它是關(guān)于理解的。
True wisdom is in knowing one's own ignorance.