No Books, No Soul
A nephew once gave me a coffee cup with the inscription, "A room without books is as a body without a soul -- Cicero." I just now Googled the expression and found this page where substantially the same quotation is ascribed to G. K. Chesterton. One possibility is that Chesterton borrowed it from Cicero. Is there a classicist in the house?
Whatever the quotation's provenience, it is true in excelsis. (But does truth admit of degrees?)