Its an awesome book i ever read. In my opinion, from my perspective, being a science book, this is a self help book too as it explains you the fact of the precious life you have got on this very planet called earth inspite of all the imperfection and almost zero probability of us existing. It not only explains many things of universe that our scientists were successful in finding out by observation but also makes you humble stating that there are so many things yet to be known. i guess our world lost one of the gems on 14th march, 2018. Hats off to this great person, the best combination of atom and molecules that the universe brought into being called 'STEPHEN HAWKING'