《宋史·列传·卷六十二》
李防喜欢上书建议阐明利害，所行之事一定有上疏，朝廷大多能实行他的提议。
防好建明利害，所至必有论奏，朝廷颇施行之。
Li Fang liked to submit memorials to suggest and explain the balance of advantages and disadvantages. Whenever something was done there must be a memorial, and the imperial court could carry out the majority of his proposals.