I love this story!  Stephen Hawking may be a physicist who thinks about how the universe came to be from "nothingness",  he contemplates living with this degenerative disease of his for a number of years.  But there is one thing that still mystifies him and makes him look like every other man in the universe. 

With all of those complex thoughts rattling around in his brain the one thing that he still can't figure out is women.   He say's they still mystify him and are still a complete mystery to him.