The more you know, the more you realize you don't know.
The things we own are the things that own us.
The past is a foreign country; they do things differently there.
家中闲坐无聊，不妨想想，有人在为生活而辛劳；官位不能飞黄腾达，想想仍有许多才能好的读书人，人都老了还是青衣。