This book is born out of a simple idea which, in turn, is based on the conviction that Muhammad is indeed a prophet, the last of a series of Semitic prophets, descendants of Abraham. Thus, there are necessarily evidences to attest to the authenticity of his mission. The purpose of this book is to make a non-exhaustive inventory of such evidences, since, as is clear from the title, we have chosen 100 pieces of evidence which, taken together, constitute a bundle of truths that only a narrow-minded person could reject.