通常有两大类,常见格式如下:1、 ……, one of the renowned writers in …, once said that …… According to …, one of the renowned writers in …, ……. According to Francis Bacon, a renowned British writer and philosopher, "Money is a good servant and a bad master."2、There goes a saying that …. As a saying goes, …. As a proverb says, …. There goes a saying that he knows most who speaks least. As a proverb says, he laughs best who laughs last.备注:第一类最为正式,有名有姓还可说明其身份或主业所在,常见于引用当下或当代的名人;第二类适用于古代的尤其是记不住名字的名人,更常见于引用谚语、公理或俗语。