(...)
The anthropic principle is, therefore, a way to interpret events, even in the early stages of the Universe, by a posterior, undisputed presence: that of a man as an observer. And the anthropic principle gives the metaphysical, as well as the scientific satisfaction of investigating many phenomena or sizes, starting from this "exceptional" event alone. The well-aimed words of Einstein, that "the most incomprehensible fact about the Universe is that it is comprehensible", acquire in this way another dimension. The Universe is comprehensible from the moment we consider that its purpose is the creation of thinking beings.   

Since, however, boldness does not abandon us, we can set yet another even more radical question: Is there, then, a scientific - and not theological or metaphysical – reason that the Universe has this feasibility?

According to J. Wheeller, who expressed an extreme variation of the anthropic principle, it is necessary for the Universe to create man in order for itself to exist! This view is based on an interpretation of Quantum Mechanics, the theory that as we saw, describes the atomic world probabilistically.  

A fact of the microcosm, according to this interpretation, exists only if it is observed. Then and only then in fact, does one of its possible states emerge. (...)  

If, however, minor changes of physical constants are sufficient to produce a completely different universe, is our "Universe" really the only one today, or what is more, the only one that ever existed?  

A radical idea is that our Universe is one of many, maybe countless other universes. Each has its own values of physical constants and evolves by the same or similar laws. Most of these universes are not able to accommodate human life. Although they may well, therefore, be of great beauty and grandeur, no one can attest it. These universes simply exist parallel to our own; or they existed as a result of another initial explosion of another universal cycle with its own values of physical constants.  

From all these efforts for self-knowledge, few probably had the satisfaction of success with the creation of observers. Perhaps, even what we mean by Universe is just a small corner of a much larger Whole. Far away from this corner other physical laws dominate and there is not even the slightest possibility of a life form.  

Here, however, a bold observation has its place. If one accepts the anthropic principle, the Universe seems extremely wasteful. Because only an infinitesimal amount of its matter or its procedures are used for the final goal. A suitable planet and a right star would suffice for that purpose - or even a galaxy. The billions of galaxies and the variety of stellar bodies seem indifferent or even hostile to the creation of life. Unless if the plan was a lot more ambitious.  

And therefore, there are billions of planets that host "life”; and again this life appears in a wide variety of forms, from which some would not have our own weaknesses or limitations in intellect. In the opinion of the author of this book, the acceptance of the anthropic principle implies a Universe scattered with intelligent beings.  

Concerning the anthropic principle the reader will distinguish metaphysical elements, or innermost human desires. But, if this constitutes a valid reason for criticism, the anthropic principle, beyond its indisputable scientific interest, has a moral justification. It draws man up from insignificance once again and places him in a prominent position. Just like any great form of art, the anthropic principle elevates, without glamourising or claiming exclusivity.