Reason?  For most of us, reason is the way that we make sense of just about everything.  When we experience problems with our appliances, motor vehicles, mathematical calculations, relationships, and everything else we use to make our lives safe and meaningful, we use our reason to solve them.  We think, we ponder, we consider; we cogitate, we use sense and logic.  We believe that we can resolve almost any issue with our reason.
     We weren't always this way.  Before the Greeks appeared along the Aegean Sea, people used mythology to grapple with the world.  They told themselves stories to explain how and why the world was.  Yet it was during the eighteenth century European Enlightenment that humans came to elevate reason above all other methods for understanding life and, most important, truth.  Reason became humanity's new "god."
     As it remains today.  If an applicance breaks down, most of us to not pray to the "god" of that appliance for repair.  We use our logic to fix it (or we summon someone who possesses such logic).  Though this has enabled humankind to make tremendous strides toward improving general social welfare, it has also pushed human beings away from transcendence and mystery.  We have reduced our world to ourselves.
     What's wrong with this?  Sure, we are finite beings in a finite world.  We should not need supernatural assistance to understand it.  Ah, but we do.  We still seek meaning.  We still seek understanding of things we cannot grasp.  Reason cannot help us with this.  Besides, we cannot deify reason apart from using reason.  No, we need something bigger than we to make sense of ourselves.  Otherwise, we're just congratulating ourselves for ourselves.
     And we still cannot explain why we are here.