  During the last centuries of human history, many questions was repeated in
connection with the great problems of the existence and origin of human beings,
and also of the Universe. The old questions of common sense and philosophy have
not been solved in spite of the indisputable results of modern natural
sciences. Recently the so-called anthropic principles show that these questions
are still present.
  We investigated some important results of the modern cosmology and their
consequences with respect to the corresponding questions of philosophy and
logic. After a short conceptual introduction there are two baselines. It is
showed first how Goedel's theroem affects the foundation of anthropic
principles. Our train of thought shows that Goedel's incompleteness theorem may
deny some efforts claiming that anthropic principles can be ruled out. After
this in the Appendix we touch the branch of questions that are connected with
the philosophical aspects of anthropic principles and the multiple-world
hypothesis. Here we investigated those formulae of quantum theory, which are
supposed to be the ground for the theory of many worlds-hypothesis.
