«A wonderful book about Stephen Hawking's biggest legacy (which no one outside of physics has heard of)... The origin of the universe, a feeling of cleverness, a possible fresh answer to the ancient metaphysical problem of our insignificance, and a new game - not bad for £20.»

Alexander Masters, Spectator

«A remarkable collaboration»

Observer

«On the Origin of Time is a gentle polemic, selling a particular theory, but no less rich and fascinating for that.... It alternates between gnomic conversations over tea with Hertog's famous late mentor and deliciously mind-bending ideas, such as that time itself stops inside a black hole.»

Sunday Telegraph

«Like his mentor and colleague Stephen Hawking, Thomas Hertog has never shied away from being ambitious in theorizing about the universe. This sweeping book provides an accessible overview of both what we know about cosmology, and some audacious ideas for moving into the unknown. It is an introduction to Hawking's final theory, but also a glimpse into even grander theories yet to come.»

Professor Sean Carroll, author of <i>The Biggest Ideas in the Universe</i>

«Hawking and Hertog, with their "top-down cosmology", are pushing for nothing less than a new philosophy of physics... The concepts and arguments presented here are truly mind-stretching... The Origin of Time is immensely rewarding.»

Lewis Dartnell, The Times

«A fascinating insight into one of humankind's deepest quests, by one of its deepest minds.»

Dr Christophe Galfard, author of <i>The Universe in your Hand</i>, and former student of Stephen Haw

«Hertog's book is a fascinating tour of cosmology, the science of the Universe's origins»

Nature

«Stephen Hawking's final theory is lucidly explained in this splendidly accessible book. Author Thomas Hertog, one of Hawking's closest collaborators, gives us a vivid insight into Hawking as both a brilliant physicist and an astonishingly determined human being.»

Dr Graham Farmelo, author of <i>The Strangest Man</i>

«A beautifully written, thought-provoking account of both the physics and the personalities involved in Hawking's visionary struggle to comprehend the cosmos. Thomas Hertog has provided a fascinating insider view.»

Dr Neil Turok, author of <i>The Universe Within</i>

«A must read»

i newspaper

«Why is our universe the way it is? How did everything begin? How might it end? Thomas Hertog probed these overwhelming questions in collaboration with Stephen Hawking - thereby achieving a privileged perspective into how, struggling against daunting physical odds, Hawking's imprisoned mind yielded astonishing insights even in his later years. This superbly written book offers insight into an extraordinary individual, the creative process generally, and the scope and limits of our current understanding of the cosmos.»

Professor Martin Rees, astronomer royal and author of <i>On the Future</i>