Here is a book that I found an excellent source of inspiration on many fronts:
“A short history of nearly everything”by Bill Bryson
The book describes general sciences such as chemistry, paleontology,astronomy, and particle physics. In it, the author explores the time between the Big Bang to the discovery of quantum mechanics, via evolution and geology. Bryson tells the story of science through the stories of the people who made the discoveries, such as Edwin Hubble, Isaac Newton, and Albert Einstein.