Diary
M.F. Perutz: Memories of J.D.Bernal, 6 July 2000
“... he replied, ‘and it can be solved only by X-ray crystallography.’ The Great Sage was John Desmond Bernal, a flamboyant Irishman with a mane of fair hair, crumpled flannel trousers and a tweed jacket. We called him Sage, because he knew everything, from physics to the history of art. Knowledge poured from him as from a ... ”