I think Sydney and I were competing. Sydney was regarded as my successor as the geneticist in the LMB which was largely physicists and chemists, and I left at the end of the summer of '56, in the fall of '56, in January of '57 Sydney arrived, and Sydney did extraordinarily well in Cambridge and was much cleverer than I ever was in Cambridge, and worked with Francis for 20 years, you know, in the same room, facing each other, and I did it for three years. And I think that was probably all either of us could take, though Francis was probably never challenged by me but I think I was challenged that he was so clearly a deeper mind than I was and, well, more serious and when, you know, at a time of after the DNA structure, Francis did all the talking. I think most people probably thought Francis deserved all the credit. You know, it was Francis, so how was I to go out in the world?

Bragg wrote me a letter, nice letter, saying he thought Crick had got too much credit and I should write up my side of the story. Now, I'd just finished The Double Helix and or almost finished it, so I... with Bragg and sort of that led to me asking Bragg to write the foreword to it. When he read it he saw my opening descriptions were not at all what he want, how he saw himself and... but his wife prevailed and he wrote a very, very good foreword for my book. But... so Bragg, you know, did see that it was very Crick wouldn't have found it without me and of course I knew I didn't, but I still had to be someplace where Francis wasn't and try and do major science. I guess that was it. My lab certainly did major science. Looking back at it, it only happened because I sort of followed the rule of always trying to get... surround myself by people that I find much brighter than myself and can do things quicker than I, or I can't even do them. So I was lucky at Harvard after messenger RNA was discovered, to be joined by the young physicist, theoretical physicist, Wally Gilbert, and we ran a joint lab effectively from 1961 to '76, so 15 years.