I should mention that the latter of the two missed nearly two weeks of classes after he came down with pneuomonia, only to resume "teaching" in a monstrously sick state. He would cough, sputter and sweat his way through thirty minutes of numbers and equations before calling off the class. I'd still butter him up, though, which, really, means I was taking advantage of a guy who may or may not have been terminal. After that semester, I never saw him again.