Hard is easy, easy is hard

One day when we were driving home from school, daughter #1 said out of blue: hard is easy, easy is hard. I thought that's quite a saying. So I asked her: is it hard or easy to climb a big mountain? She said: hard. I said: remember hard is easy, easy is hard. So she said: easy. Then she asked me whether it's hard or easy to stand on top of a tree. I asked her instead. She said: easy ;) Then we went about "eating ice cream is hard", "reading a big book without parents' help is easy", on and on... It became her favorite game to play in the car :)