萨迪《蔷薇园》：
学者不肯努力等于情人没有金钱，旅人没有常识等于鸟儿没有羽翼；理论家不去实践等于树木不结果实，圣徒没有学识等于屋子没有门户。
A scholar without diligence is a lover without money; a traveller without knowledge is a bird without wings; a theorist without practice is a tree without fruit; and a devotee without learning is a house without an entrance.
