允公允能，日新月异。
南开校训，意为培养公正与能力兼备的人才，追求不断创新。
科学的每一次伟大进步都源于新的想象的大胆。
现代密码学的挑战不仅是确保通信安全，而且要以既高效又可扩展的方式实现。
写作是一种不被中断的说话方式。
伤人的不是再见，而是随之而来的回忆。
Designing markets requires both economic theory and practical intuition.
People can be divided into these types: strangers, acquaintances, familiar people, friends, and close friends. True friendship isn't about compliments to your face, but whether you're mentioned when they talk about friends behind your back.