Why is there something rather than nothing? What makes anything to exist, as such? Can the world have been always. Is God really everywhere and in all things? Is God on fact the last end every being in the universe? Are questions like these exclusively theological, answerable only in the light of revelation and faith, or have they also a possible philosophical solution? St. Thomas Aquinas, as a philosopher, asked these and many related questions, and he answered them philosophically. For him, creation is a philosophical problem and not only a theological one. In his eyes such is the actuality of creation that apart from it no being whatever could be; the problem of creation is solidary with the problem of God; and without God, nothing is.