Who said "There are moments when the soul goes mad"?

This quote is attributed to Dmitri Karamazov.

There are moments when the soul goes mad - Dmitri Karamazov

"There are moments when the soul goes mad"

Dmitri Karamazov

Character in The Brothers Karamazov

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"A genuine paraphrase of Dmitri's thoughts on passion and moral struggle"

"I am not mad; I am only unhappy"

"Beauty is mysterious as well as terrible. God and the devil are fighting there, and the battlefield is the heart of man"

"I could not bear the sufferings of children"