唯一存在的限制是你给自己设定的限制。
The only limits that exist are the ones you place on yourself.
图书馆是活书的墓地，每一本都在等待读者将其复活。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
无产阶级平等要求的实际内容都是消灭阶级的要求。
始终不渝地忠实于自己和别人，就能具备最伟大才华的最高贵品质。
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
Never stop learning because the world never stops changing.
"Humor is a way of dealing with the absurdity of life."