Another great story from George Gamow. I read his book Gravity and I highly recommend reading that one too. He has an exceptional talent in simplifying complicated topics. In this book, where he summarizes the development of quantum theory, he has a very similar writing style. He explains very complex physical theories such as uncertainty, de Broglie waves, Pauli exclusion principle etc. incredibly simple for a layperson. But, somehow he manages to give much more helpful information about them than any textbook that I read can give. If I were to teach chemistry, this book would be a class assignment for my students in their first semester.