The best revenge is massive success.
Every individual has a place to fill in the world and is important in some respect whether he chooses to be so or not.
Life is far too important a thing ever to talk seriously about it.
When one is in love, one always begins by deceiving one's self, and one always ends by deceiving others. That is what would calls a romance.
Natural experiments are a powerful tool for understanding causal relationships in the real world.