Who said "The nature of real love is sacrifice and suffering."?

This quote is attributed to Dmitri Karamazov.

The nature of real love is sacrifice and suffering. - Dmitri Karamazov

"The nature of real love is sacrifice and suffering."

Dmitri Karamazov Love

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"

"I love my wife, but sometimes she drives me crazy."

"Love conquers all obstacles."

"Love is patient, love is kind."

"I'm not stupid, I'm just in love!"