I get some of my ideas from watching my three daughters but most of them come from my own memories of growing up. I can remember how romantic I was not just about love but romance in the classic sense - the romantic ideals: of honor and truth of loyalty sacrifice and fairness. Those were the elements that made a story satisfying to me.
Freedom. And Justice. If you have those two it covers everything. You must stick to those principles and have the courage of your convictions.