You are Peter and on this Rock I will build my Church and the gates of hell will not prevail against it.
To feel anything but hope is to not believe the Word of God.
PS. He wasn't a former Nazi. As a pre-teen, he was forced to join the Hitler Youth because it had become compulsory. Ratzinger was never a member of the Nazi Party.
You know that his family was persecuted by the Nazis due to his father speaking out against them? Read up on him - very interesting man.
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From his memoirs...
Cardinal Recollections
Cardinal
Ratzinger's father was an officer in the state police. His hatred of the Nazis, whose brutal misconduct often made it necessary for him to intervene, made him a marked man even before Hitler's assumption of power in 1933. A devout Catholic — as was his wife — the father would warn the local clergy when he knew they were under Nazi surveillance. He was relieved when he reached the age of 60 in 1937 and was able to retire.
The road home
Hitler's seizure of the Sudentenland in the autumn of 1938, on the pretext that its German inhabitants were being maltreated by the Czech government, was preceded by "a campaign of lies obvious even to the half-blind." The Munich agreement, which sanctioned this act of aggression, "was clearly only a postponement, not a solution.
My father could not understand how the French, whom he so admired, could swallow each of Hitler's successive violations of international law as something almost normal." The attack on Poland in September 1939, "preceded by the same ritual staged before the Sudenten takeover," was followed by the eery quiet of the "phony war" and then by Hitler's swift victories in Denmark and Norway, the Low Countries and France. "Even opponents of National Socialism experienced a kind of patriotic pride. . . .
My father, however, saw with unblinking clarity that a victory for Hitler would be a victory not for Germany but for the anti-Christ, the beginning of apocalyptic times for all believers — and not only for them," the cardinal writes.
(snip)
The future cardinal was now in a minor seminary. Classes became increasingly intermittent as the war intensified.
The invasion of France by the Western allies in May 1944 "was a sign of hope for most of us. We had considerable trust in the Western powers whose sense of justice, we hoped, would help Germany to a new, peaceful existence." (snip)
http://www.catholicculture.org/docs/doc_view.cfm?recnum=663