Thinker's LibraryThe '''Thinker's Library''' was a series of 140 small hardcover books published between 1929 and 1951 for the Rationalist Press Association by Watts & Co., London, a company founded by the brothers Charles and John Watts.
The series was launched at the time when Watts & Co. was being run by Charles Albert Watts. A member of the company's board of directors, Archibald Robertson, took an active interest in setting up the series and it was he who suggested the series' name.
The Thinker's Library consisted of a selection of essays, literature, and extracts from greater works by various classical and contemporary humanists and rationalists, continuing in the tradition of the Renaissance. Many of the titles were cheap reprints of classic books, aimed at a mass audience. Provided by Wikipedia