Terrific. Mesmerizing. Beautiful. Thought provoking. Entertaining. Got all the attributes for an ideal read. You will fell in love with physics after a few pages in to it. More than anything else, you will fell in love Eintien for all his imagination, rebels, non-conformist nature, strong principles and the impact he left on physics. Quite a read!! loved it. Thanks Issacson. you nailed the biography.