The Oxford Dictionary of Quotations

The Oxford Dictionary of Quotations is the Oxford University Press's large quotation dictionary. It lists short quotations that are common in English language and culture. The 8th edition, with 20,000 quotations over 1126 pages, was published in print and online versions in 2014.^[1] The first edition was published in 1941.

It begins with a preface explaining the term quotation:^{[citation needed]}

The dictionary has been compiled from extensive evidence of the quotations that are actually used [as direct quotations]....

This book is not—like many quotations dictionaries—a subjective anthology of the editor's favourite quotations, but an objective selection of the quotations which are most widely known and used. Popularity and familiarity are the main criteria for inclusion, although no reader is likely to be familiar with all the quotations in this dictionary....

The quotations are drawn from novels, plays, poems, essays, speeches, films radio and television broadcasts, songs, advertisements, and even book titles. It is difficult to draw the line between quotations and similar sayings like proverbs, catch-phrases, and idioms. For example, some quotations (like “The opera ain’t over till the fat lady sings”) become proverbial. These are usually included if they can be traced to a particular originator.... Catch-phrases are included if there is evidence that they are widely remembered or used.