There is a reward structure in science that is very interesting: Our highest honors go to those who disprove the findings of the most revered among us. So Einstein is revered not just because he made so many fundamental contributions to science, but because he found an imperfection in the fundamental contribution of Isaac Newton.
When "everyone knows" that something is so, it is always more interesting and often illuminating to assumeexactly the opposite, and to see where that leads.
Happiness is this place that, once you arrive there, you have nothing else to do. You get bored. Passion is this up and down; it's like a rollercoaster, you know, and much more interesting to me.