Few scientists in the late 1940s were as powerful as England’s John Cockcroft and few were as mild in manner. Thus the following brief letter to a London public servant, quaint as the language is, shows how tough he could be in protecting Harwell, his creation:

You might like to see the attached cutting about Sir Ralph Glyn, who is apparently still make rude remarks about Harwell. I think perhaps you should consider whether Sir Ralph Glyn should be allowed to visit Harwell … or alternatively whether the Minister should have a word with him about these statements.

Kowarski, Lew. 1948. “Kowarski speaks on France’s place in international picture of atomic energy development.” Nucleonics 2 (May): 59-65.
Cockcroft letter