【1】Nothing gives an author so much pleasure as to find his works respectfully quoted by other learned authors.

参考译文：没有什么比发现他的作品被其他博学的作家所引用更能让作者愉快的了。

备注：so much pleasure as +比较对象(A)=as much pleasure as +比较对象(A) 意思和比较对象A一样多的快乐。比较对象A为不定式短语to find his works respectfully quoted by other learned authors.

以上句子相当于下面句子进行理解

Nothing makes an author happier than his works being respectfully quoted by other learned author.

Nothing makes an author happier than to find his works  respectfully quoted by other learned author.

【2】When I am attacked by gloomy thoughts, nothing helps me so much as running to my books.

参考译文：当我被悲观的想法所攻击时，没有什么比跑过去看书更能帮助我的了。

备注：so much  as +比较对象(A)=as much  as +比较对象(A) 意思和比较对象A一样多(表示程度)。比较对象A为动名词短语to running to my books.

以上句子相当于下面句子进行理解

Nothing helps me more than running to my books.