Good game, but there are some things you could add to make it a great game:
1. Upgrades. Every level gives you some points and you can use them to upgrade you eye-thingy, like making it smaller or more shiny.
2. Premium Content. I enjoyed this game very much, but I whould enjoy it more if there were a way to buy the philosophic lessons without having to actually learn them through playing. Or you could give basic users only useless lessons, like "be nice" or "floss your teeth".
3. Energy Points. You get 100 at the start and every level uses some of them. So you can not play the game at once but have to come back every 2 hours. This usually increases fun indefinitely.
4. Multi-Player. Add some token feature to earn the "Multiplayer"-tag. Sure it makes no sense in this case, but this is no reason to not do it.
5/5 and favorited