" Many years later he looked through one of my books and said, " How did you learn all this, Isaac?" " From you, Pappa" , I said." From me? I don't know any of this" ." You didn't have to, Pappa" , I said. " You valued learning and you taught me to value it. Once I learned to value it, the rest came without trouble." - Isaac Asimov (Isaak Yudovich Ozimov). It's been a good life. "