"It's amazing how often in math, stupid things lead to something deep." - Dan Abramovich, 10 Sept 2008

"Sometimes mathematics is so trivial that I feel like apologizing for even mentioning it." - Tom Goodwillie, 11 Sept 2008

[On smash products] "I know from experience that when you take your family to a math conference, this is one of the phrases they laugh about." - Tom Goodwillie, 11 Sept 2008

"The fact that this is obvious is dangerous." - Constantine Dafermos, 22 Sept 2008

"A lot of things are called phi -- my grandmother is called phi." - George Daskalopoulos, 26 Sept 2008

[Category theory] "In this course, you don't need to worry. I'm not going to push you over the brink." - Dan Abramovich, 26 Sept 2008

"We don't care, but we do care." - George Daskalopoulos, 26 Sept 2008

"Whatever you do, just do this." - George Daskalopoulos, 1 Oct 2008

"I can assure you that what follows will be quite boring, because we have to verify that the obvious is indeed obvious." - Constantine Dafermos, 6 Oct 2008

"The world is not entirely satisfactory." - Dan Abramovich, 6 Oct 2008

"This is a little bit like magic." - Rick Kenyon, 7 Oct 2008

"This is a great place for a complete atheist to be a preacher." - Dan Abramovich, 8 Oct 2008

"I agree that it's magic, and that's the beautiful thing about complex analysis." - Rick Kenyon, 9 Oct 2008

"I'll act like a mathematician: If I already have a water kettle boiling in the other room, I'll go to the other room." - Dan Abramovich, 15 Oct 2008

"Now I am just wasting time, because I cannot start a new topic in one or five minutes." - Constantine Dafermos, 20 Oct 2008

[Linear algebra] "Maybe it goes too far to say it's awful, but for the preaching side of my lecture, it's fine." - Dan Abramovich, 22 Oct 2008

"If I start thinking, I will waste a lot of time." - Constantine Dafermos, 28 Oct 2008

"Is this correct? Let's see now. It's late in the evening. This is when I am confused whether 1 is bigger than 2 and so on." - Constantine Dafermos, 28 Oct 2008 [evening make-up class]

"I think that since it's getting late, I'll just state this part of the theorem. It's boring anyway." - Constantine Dafermos, 28 Oct 2008

"This picture kind of looks like New Hampshire and Vermont, I guess." - Tom Goodwillie, 6 Nov 2008

"This is pretty boring, but I think it needs to be said. Let me say a bunch of boring, obvious things." - Tom Goodwillie, 11 Nov 2008

"This is the kind of convergence theorem that only an analyst can love." - Rick Kenyon, 13 Nov 2008

"Now, I will tell a joke. The class is over, so you are free to leave, but..." - Constantine Dafermos, 13 Nov 2008

"By telling you this joke, I do not mean to suggest that you will all become waiters and waitresses after graduation." - Constantine Dafermos, 13 Nov 2008

"Actually, my logic wasn't flawed. My logic was flawed when I said my logic was flawed." - Tom Goodwillie, 18 Nov 2008

"I am such an advocate of naturality and excision that it seems a shame to cheat you here." - Tom Goodwillie, 20 Nov 2008

"This is a Theorem with a capital T." - Constantine Dafermos, 20 Nov 2008

"I don't know if the police of naming statements would agree with this." - Dan Abramovich, 21 Nov 2008

"There's nothing to prove here, but it's always comforting to check these things." - Dan Abramovich, 26 Nov 2008

"Today you should not believe a single word I am saying, because I have taken so many painkillers that I feel I am flying in a different universe." - Constantine Dafermos, 1 Dec 2008

"There are various ways to fill this in, but I'm sort of fond of the following lazy way." - Tom Goodwillie, 2 Dec 2008

"I'm pronouncing this like a greek letter, but really it's a triangle with all but one side." - Tom Goodwillie, 2 Dec 2008

"Everybody knows that if you add up no numbers, you get zero. Not everybody knows that if you multiply no numbers, you get 1, but I know that." - Tom Goodwillie, 2 Dec 2008

"If you want to be cute about it, you can use S^{-1} instead of S^0." - Tom Goodwillie, 4 Dec 2008

"For someone who likes the empty set so much, I often make this mistake of not writing the symbol for the empty set. But if there was one set that would cause you to do that, it would be the empty set." - Tom Goodwillie, 4 Dec 2008

"It's enough work to draw a three-dimensional picture; drawing an n-dimensional picture is impossible." - Tom Goodwillie, 9 Dec 2008

"What is useful in mathematics? Even most of applied mathematics is pretending to be applied. We do what we like." - Dan Abramovich, 10 Dec 2008