Catechesis on creation is of major importance. It concerns the very foundations of human and Christian life: for it makes explicit the response of the Christian faith to the basic question that men of all times have asked themselves:[120] "Where do we come from?" "Where are we going?" "What is our origin?" "What is our end?" "Where does everything that exists come from and where is it going?" the two questions, the first about the origin and the second about the end, are inseparable. They are decisive for the meaning and orientation of our life and actions.