不了解敌情,不可以行军打仗,不熟悉洋人的情况,不可以远谋。
Peace is the highest good, because it is the state in which the mind is most fully in accord with its nature.
穿着粗布衣裳,吃着简单饭菜,这样的快乐哪里需要刻意寻求?