Who said "Forgive them, for they know not what they do."?

This quote is attributed to Karenin.

Forgive them, for they know not what they do. - Karenin

"Forgive them, for they know not what they do."

Karenin

Character in Anna Karenina

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"What is this passion but the worst of all passions?"

"Nature has made us unequal, and it is futile to pretend otherwise"

"I am but a man, subject to all human weaknesses"

"To be alive is to suffer"