Take long walks in stormy weather or through deep snows in the fields and woods, if you would keep your spirits up. Deal with brute nature. Be cold and hungry and weary.

In every problem, there is a hidden pattern waiting to be discovered, and it is our duty as mathematicians to uncover it.

"La realidad es siempre más compleja que cualquier ficción que podamos inventar."

写作是探索自我未知领域的过程。