<b>A first-rate tour de force</b>
The New York Times
<b>Frighteningly logical, believable, and grimly prophetic . . . Clarke is a master</b>
Los Angeles Times
<b>As a science fiction writer, Clarke has all the essentials</b>
The New Yorker
<b>There has been nothing like it for years; partly for the actual invention, but partly because here we meet a modern author who understands that there may be things that have a higher claim on humanity than its own 'survival'</b>
C. S. Lewis