Before I joined the project most of the English people with whom I had made personal contacts were left wing and affected to some degree or other by the same kind of philosophy.

I was in the underground until I left Germany.

In the post war period I began again to have my doubts about Russian policy.

The last time when I handed over information was in February or March 1949.

I was ready to accept the philosophy that the Party is right and that in the coming struggle you could not permit yourself any doubts after the party had made a decision.

I was a student in Germany when Hitler came to power.

Since coming to Harwell I have met English people of all kinds, and I have come to see in many of them a deep rooted firmness which enables them to lead a decent way of life.