We are living in two worlds: the physical world of matter, forces, and motions and the mental world of ideas, impressions, and emotions. The aim of this books ten essays is to explore the world of the mind. It is a world claimed to be supernatural, but rational justifications, supported by scientific investigations, demonstrate that it is of our natural world. Once the mind is rationally explained in terms of the brains functionalities, then it becomes possible to answer far-reaching existential questions: Why do I exist? What is life? What happens when I die? Be warned: this book isnt an easy read. Each essay is a step upward into the unfamiliar and unconventional, requiring effort, patience, and above all a mind that tolerates the extraordinary.