理论和实践的区别在于，理论上，理论和实践没有区别，但在实践中，却有区别。
The difference between theory and practice is that in theory, there is no difference between theory and practice, but in practice, there is.
摧毁资本主义制度的最好方法是破坏货币。
我们必须不断挑战艺术世界的等级制度。
The past beats inside me like a second heart.
数学中最深刻的思想往往源于最简单的观察。