The man is just given to being profound. So I have collected some of his comments from the semester long class and listed them here. Don't worry, this is not meant in the same vein as the collection of Andres quotes. When you write four greater thans , no one can question what you do. We all know there is no difference between an infinite square sheet and an infinite circular sheet and if there was you couldn't check it because it would take too long to get out there.
Uniqueness can be very powerful.
Intuition, by the way, is terribly dangerous. The danger of using intuition grows exponentially as you get away from classical physics. If someone says to you that there is a one farrad capacitor over there on the table, don't touch it. If there is anything that could be a problem with my dielectric, it's not in my dielectric . The reason it is easy to deal with one observer is that there is no one to disagree with you.