in book

in one's book

Fig. according to one's own opinion. He's okay in my book. In my book, this is the best that money can buy.
See also: book

in (one's) book

In one's opinion: In my book they both are wrong.
See also: book
References in classic literature ?
That capital of forces which human thought had been expending in edifices, it henceforth expends in books.
Says the poet Mr Udd, "Being seated, to run through the region of the spiritual world; I have had this advantage in books.
There is truth in this, both in the rise of genre fantasy in books (now plagued with a numbing sameness and endless trilogies) and in the ascendance of Joseph Campbell (savant of the mythic archetype theory of storytelling, as used by George Lucas in Star Wars) over John W.