What's the German quotation in The Sunset Limited?

In The Sunset Limited, White aka "the professor" (played by Tommy Lee Jones) quotes a short German sentence.

I am German myself, but I was unable to understand it. Were the words he said actually german? Did he just pronounce them in a strange way maybe?

What did he say and who did he quote?

Best Answer

Analysing some subtitles I found out that the quotation can be:

Ich kann nicht anders

Maybe the pronunciation wasn't that great. The quotation is attributed to Martin Luther:

Hier stehe ich, ich kann nicht anders. Gott helfe mir. Amen!: "Here I stand, I cannot do differently. God help me. Amen!"

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