the funy thing is that they were relly inteligent few hundred years ago ...
I don't think so. Arabs acted as the intermediaries between the Orient and the West. They stole the knowledge from both the sides.
True but at least they saved astronomy after the Dark Ages appeared in Europe and all the information was lost in that part of the world philosophy etc and math (Like it or Leave it

)
Now you know who to thank for your textbook lol
http://en.wikipedia.org/wiki/Arab_transmission_of_the_Classics_to_the_West