Well, surely if you accept the evolutionary premises that a) women seek men who are successful b) men seek women who are beautiful c) intelligence

Well, surely if you accept the evolutionary premises that a) women seek men who are successful b) men seek women who are beautiful c) intelligence leads to greater success d) intelligence is genetic/hereditary (to some extent) then this is an inevitable outcome. That more physically beautiful people tend to be more naturally intelligent, due to sexual selection / natural selection / evolution. (I didn't come up with this myself, I read a psychology paper that pointed this out some years ago. Can't find citation though)