2. What belongs to you, you tend to take care of; what belongs to everyone tends to fall into disrepair.
3. Consider long-run effects for all, not simply short-run effects for the few.
4. If you encourage something, you get more of it; if you discourage something, you get less.
5. Nobody spends somebody else's money as carefully as he spends his own.
7. Liberty makes all the difference in the world.