The top Nobel laureate physicist R. Feynman guides us in a simple and understandable way through Nature, in a search for the essential characteristics of the laws that govern it: why is the law of gravity so elegant and simple? And why is it so amazing that Nature obeys it? What do we believe we know about the laws of physics, what remains to be guessed, and how will we proceed in exploring these subtle and complex threads? Having the passion for research and teaching himself, but always seeking to see established knowledge "differently", Feynman, with the explosiveness of his personality, his humor, often his disarming simplicity, gives his all in this book.