My background is European, this is why I have mentioned European names.. Please do mention some non-European thinkers and artists (Al Horezmi and Rumi come to mind.) Now, how you ended up with the 80% figure is a mystery to me.  In my books, civilized science starts with the Greeks and the Library of Alexandria - but do argue the contrary. (If you are just going to use politically correct arguments, please don't bother.)