This book combines scientific and spiritual psychology to give the reader a thorough understanding of human beings. Human beings, at present, live in bodies and have personalities; they also have a non-material side. To fully understand human beings both their earthly and spiritual sides must be addressed. Secular psychology, more or less, gives people some understanding of the physical aspect of them but few books, so far, have given people science based spirituality. The book tries to make its talk on spirituality based on the scientific method; that is, it emphasizes mostly only what we can verify about peoples non material aspects.