Where was I? What had been done? I replied that I was in the recovery room and that he had detached the lateral rectus muscle of the right eye and attached the plaque containing radioiodine (I-125, to be precise) to the sclera. I said that I was sorry it was not radioactive ruthenium instead of iodine (I have a thing for the platinum metals) but that 125, at least, was memorable for being the smallest number that was the sum of two squares in two different ways. I startled myself as I said this; I had not thought it out before--it just jumped into my mind. (I realized, a few minutes later, that I was wrong--65 is the smallest such number.)