This is a treatment of the greatest questions we can ask written by a layperson for lay-reading. Accordingly, this book is neither qualified nor intended as an instrument for academic study. At the same time, some degree of general, background, scientific understanding is necessary in order to frame the questions and, indeed, it is only the scientific platform now available to us that makes it possible, for the first time, for us to really address the questions. If you flick through the pages here, don't be put off by the seeming unfamiliar and complex looking diagrams, chemical formulae and the like. In the text, all of this has been reduced to an easy and, hopefully, interesting lay-person's understanding. Should you decide to read the book, I am confident you will come out of it with an added shade of colour to your perception of both yourself and the world in which we live. That, in turn, will justify my effort and intent to make our world a little better.