Hardcover in publisher’s non price-clipped dust-jacket. 493 pages. Bibliography, Index. First edition, stated firs t printing. A collection of essays by 12 eminent scientists and philosophers written for the layman. Contributors include: Bertrand Russell, Sir Edmund T. Whittaker, Hermann Bondi, Edward U. Condon, Julian Hixley, Jacob Bronowski and six others. No previous ownership marks. News review laid-in at front end-paper with resultant toning. Dust-jacket quite rubbed but complete. Else a clean, tight and unmarked copy. Very good in a near good dust-jacket.