Stephen Hawking was regarded as one of the most brilliant theoretical physicists in history. He was considered the brightest brain in the league of Albert Einstein. He must be probably the only scientist after Carl Sagan, whose books were popular among even the non-scientists. His best-selling books have appealed to readers who may not have Hawking's scientific background. One of his popular science book on cosmology, “A Brief History of Time: From the Big Bang to Black Holes” became a bestseller and sold more than 10 million copies in 20 years. It was also on the London Sunday Times bestseller list for more than five years and was translated into 35 languages by 2001. Writing a best seller or a book which is popular and is comprehended by non-scientists could be great but may not be a big deal. But “Brief History of Time” was most certainly a big deal. It was an extraordinary feat because Stephen Hawking was completely immobile except for few muscles on his face which...