Scientific research is one of the most exciting and rewarding of occupations.
And indeed this theme has been at the centre of all my research since 1943, both because of its intrinsic fascination and my conviction that a knowledge of sequences could contribute much to our understanding of living matter.
I had remained in Cambridge concentrating only on basic research and avoiding as far as possible teaching or administrative responsibilities.
From 1944 to 1951 I held a Beit Memorial Fellowship for Medical Research, and since 1951 I have been on the staff of the Medical Research Council.