Philosophical Musings (sort of)

Actually, these aren't really philosophical musings, although they originated in philosophy class today.  My professor was quick to point out that what he said in answer to one of my questions was theology, not philosophy.

We're discussing some of the key philosophers and their teachings and ideas.  Different schools of philosophy have different ways of explaining reality.  The disciplines of theology and philosophy are two very different things, but according to my professor they overlap in that they both seek answers to the questions
"Who am I?"
"Why am I here?"
"Where am I going?"

We were talking today about Descartes, whose philosophies started with the idea that things are only knowable by reason.  I won't get into it much here, mostly because I only understand a little.  But I asked my professor how he defines reality, how he knows that he is real, how he is aware of himself.  He replied,
"As soon as I start thinking of me, I stop looking at God and listening to God, who He says I am."  Summing up his further comments:
All that matters is that God says I am His.  He spoke through acts in history (my birth, my baptism, my marriage, etc) to tell me who I am, why I'm here, and where I'm going.  In every aspect of my life, I see God at work, speaking to me.

I had never really thought of it that way before.  The only definition of reality that matters is God's.  And it doesn't even really matter if we figure out how God defines reality or not.  All that matters is that God calls us his own, and he reveals himself and his will to us in many ways throughout our lives.

When that's what really matters. . . nothing else really matters, does it? :)