True leadership means helping others to be better than they thought they could be.
Pain research is not just about alleviating suffering; it's about understanding a fundamental aspect of human biology.
A mathematician is a device for turning coffee into theorems.
In the long history of humankind (and animal kind, too) those who learned to collaborate and improvise most effectively have prevailed.  
Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life.