Here are 42 quotes I picked up from the lecture that I've published here: https://medium.com/@RajenSanghvi/42-quotes-from-sam-altman-o...
P.S. I've somewhat religiously been watching/taking notes from these lectures since they started. I really agree with a lot of the comments here, that it's been a very practical lecture series with lots of tactical advice that you can directly apply to your startup (as opposed to high level strategy discussions). Thanks to YC and Sam for putting this together.