“过后思量总可怜”是程千帆先生在他的《两宋文学史·后记》中吟出的两句诗的第二句 ,前一句是“韶华到眼轻消遣”。六年前 ,我读到这两句诗的时候 ,以为这不过是一位老学者自谦的慨叹。六年之后 ,当我捧读《程千帆沈祖学记》（以下简称学记）掩卷沉思的时候 ,才意识到两句 “After thinking of the total poor” is Mr. Cheng Qianfan in his “Two Song Literary History Postscript” in the second sentence of two poems, the first sentence is “Shaohua to the eye pastime.” Six years ago, when I read these two poems, I thought it was only a modest lament from an old scholar. Six years later, when I read the book, “Cheng Chuanfan Shen Zu Xue Study” (hereinafter referred to as Xue Ji)