We are like travelers who have lost their way; we must ask, each one, for directions from a passerby.
The only true wisdom is in knowing you know nothing.
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。