数学证明的优雅在于其简洁和清晰。
The elegance of a mathematical proof is in its simplicity and clarity.
国家是为法律而组织起来的人民。
I think that the most important thing in life is to be true to yourself.
革命者可以失去一切:家庭、自由,甚至生命。但不能失去道德。