This book is the result of having sought and found in the sacred books of main popular religions and philosophies, the most important and common points that unify them all. Trying to organize and explain that points or principal ideas in a practical and logic way; and purging them, of each school's particular dogma. Using a simple vocabulary and without the necessity of having any previous experience in any type of lecture, this make it to be lightweight but deep at the same time, driving us to a personal introspection and meditation; which is the principal objective of the book.