Dictionary of Quotations, 1968 2nd Edition, collected and arranged and with comments by Bergen Evans. Hardcover with dust jacket, 2027 pages, published by Delacorte Press.
I found a copy by chance and was so delighted when I cracked it open. I refer to it often, and specifically enjoy getting to read bits from somewhat antiquated English writers, thinkers, and poets, which offers some inspiration of whether to pursue those writers further later on.