"People ask me,' How long did it take you to write that book? ' The answer is,'Sixty-eight years.'" The book consists of 600 essays by Milner - some done in consultation with other experts in the many fields shaped by Darwin's thinking ." .
How do you have time to write, first of all, and howdidyou come up with the tone of these books, which are sharp, witty, but also have a lot of deep issues in them?