Below is a half-hour video on the life of Dietrich Bonhoeffer made way back in 1978. As a young pastor, I showed it to my confirmands. I was delighted to find that it is on YouTube. I hope you watch it. It is a good piece of work.
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I do not seek to understand that I may believe, but I believe in order to understand. For this also I believe, –that unless I believed, I should not understand.-- St. Anselm of Canterbury (1033-1109)