So, I was defending the Faith against an atheist the other day (I'm sure he has some vague belief of a First Cause), and basically the fellow thinks that aliens came to Earth, genetically made humans, taught them how to survive as a society, and all that.  

I tried to relate that much of that school of thought is actually covered in the Book of Genesis, and also--though not Sacred Scripture--the Book of Enoch.  

But then, he argued that the Sumerians had first came up with the stilleto that described these promethian stories, and that the Sumerian accounts predated all Scripture, including the Book of Enoch.  

Now, I realize that this whole "Aliens created Man" myth is being propogated by Coast to Coast AM and the masonic History Channel.  Whatever.

But we had a big communication problem.  It was then I needed to argue that our civilization holds onto tradition, not texts, for our history.  For example, we know everything about what it means to be a Catholic these days, thanks largely to the traditions of the first five or six centuries.  Only later, did we see the organization of our history into various history books where we could keep track of things as we have.  

Yet, this atheist will argue against the interpretation of history itself.  He will say: "Well, it was the winners of the past who wrote history."  

So, basically the guy and I could not even agree on the events of the past.  And it was then that so many things flew out of the window on my behalf, and I found myself only being able to say, "Well, this is how I believe, and I have faith in it, and I know that what I believe in is the truth."  But I know such a statement comes off as cliched and vindicating for him.

What's a guy to do?  (I have never been good at convincing anyone of converting.  Just not my talent.)

Yet, this atheist will argue against the interpretation of history itself. He will say: "Well, it was the winners of the past who wrote history."

that imo applies to conflicts of modern times, ie the french revolition.  Who won?  The mass murdering jacobin freemasons.

You should buy and read, and STUDY an apologetics book.  I have College Apologetics by Fr Anthony Alexander.  The beginning emphasizes that a cause has a precept.  A ball does not move unless an outside force is applied to that ball.  Nothing happens without a precept, unless a logical person realizes that ultimately there is an eternal force, GOD.  The book later moves onto the validity of the Gospels, etc etc etc.  You can find it on Tan books.  The book is called College Apolegetics for a reason though.  If this "athiest" can't grasp certain basic concepts they won't understand the level of the book.

IMO an athiest in many cases is just a doubtful person needing a foundation.  Martin Luther was deathly afraid of THE devil, and eventually fell to despair.  Athiest are just simply uncertain or at open war against GOD like the communists.