 On 30 April 1943 , Pius XII wrote to Bishop Graf von Preysing of Berlin to say : " We give to the pastors who are working on the local level the duty of determining if and to what degree the danger of reprisals and of various forms of oppression occasioned by episcopal declarations ... ad <unk> mala <unk> ( to avoid worse ) ... seem to advise caution . Here lies one of the reasons , why We impose self @-@ restraint on Ourselves in our speeches ; the experience , that we made in 1942 with papal addresses , which We authorized to be forwarded to the Believers , justifies our opinion , as far as We see .... The Holy See has done whatever was in its power , with charitable , financial and moral assistance . To say nothing of the substantial sums which we spent in American money for the fares of immigrants . " 
