Best tribute from one author to another's book

Wilkie Collins' "The Moonstone" (1868) is considered by many to be the first detective novel. A later practitioner in the genre, Michael Innes, wrote "The Moonstone stands alone in its kind...(there is) a sense of attending upon the birth of the detective story." Collins was also the contemporary & friend of Dickens.

However, here we can look into another curious aspect of this novel. Much of it is narrated by Gabriel Betteredge, House-steward in the service of Julia, Lady Verinder. This man has a strange habit of using Daniel Defoe's (also known as the father of the English novel) "Robinson Crusoe" (1719) as other people use holy books like the Bhagavadgita, the Bible or the Quran to find immediate solutions to their problems, i.e., open the book at random & apply the first sentence which catches their eye as the answer to their problem!

Though Betteredge claims to be a well-read person, Robinson Crusoe occupies the "Pole Position" among all the books he has read! At the beginning of the book itself, he says he has worn out six copies, no less, in his service, with constant thumbing. So on her Ladyship's birthday, she presents him with a new seventh copy!

It goes without saying that a writer of Collins' calibre, inserts appropriate quotations from Defoe's immortal book at suitable points in his own narrative, as representing Betteredge's references at climactic points of the story, to vindicate his belief in the infallibility of Defoe's book in providing solutions to his own dilemmas.