子游问孝，孔子说：“现在的孝顺，只是能赡养老人。即使是犬马，都会得到饲养。不敬重，有何区别？”
The pursuit of mathematical truth is a never-ending adventure.
I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That's how I've gotten to where I am.
一个革命者可以失去一切：家庭、自由，甚至生命。但有一件事他永远不能失去：荣誉。
The world is a stage, but the play is badly cast.
