"And this I believe: that the free, exploring mind of the individual human is the most valuable thing in the world. And this I would fight for: the freedom of the mind to take any direction it wishes, undirected."
The arithmetic of algebraic groups is a key to understanding the Langlands conjectures.
Try never to be the smartest person in the room. And if you are, I suggest you invite smarter people... or find a different room.
Light gives life to architecture; without light, architecture loses its soul.