Time and the Space-Traveller

"Unusually clear. . . . [Time and the Space-Traveller] treats the twin paradox fairly and broadly, everywhere with good sense and good physics. . . . Enjoyable reading for any one with a taste for physical argument."—Scientific American

"I read Time and the Sapce-Traveller with considerable pleasure and am delighted that someone has collected all the material on the clock paradox."—Isaac Asimov

"[Time and the Space-Traveller] makes this interesting debate accessible to the nonspecialist."—Times Literary Supplement

"A thorough and wide-ranging survey. . . . A pleasure to read."—Choice