The story of this man's life is flat-out amazing. Newton is one of those who qualifies to be on the very short list of the Smart People In History. This book gives one appreciation of Newton's intuitive brilliance. He described gravity, INVENTED calculus, figured out the inverse square law, understood and set out the rules for motion and on and on.

There is also interesting stuff about his personal life. Disappointments, demons, dreams, etc.

Some of this story was difficult to understand. I have a difficult enough time with math when it is laid out and described in a book or on a chalk board but when it is just described conceptually ... whew .... its a mental workout.