So, just like my luck with Abe Yoffe, taking First Class, and then working hard through my thing, and being initiated into research, and his research group, I again hit the jackpot with Harry Emeléus, because a more distinguished inorganic chemist you wouldn't meet, a more gentle and lovely man, if I can put it that way, he really was a beautiful person. He had a sharp side, one knew if one had broken things, and so forth. But, by and large, he was very generous, very helpful, and what is of course always the sign of a good research director, he left you alone to do your own thing, if you could do your own thing. If you got into trouble and said, 'Gosh, what about this?' and he'd just sort of say, well, have you thought of this, or what about that, and well, I think something, somewhere, had something to say about that, and you'd go and look it up. But, by and large, you just went in and did the work.