Who said "Estraven was right, and I was slow to see it"?

This quote is attributed to Therem Harth rem ir Estraven.

Estraven was right, and I was slow to see it - Therem Harth rem ir Estraven

"Estraven was right, and I was slow to see it"

Therem Harth rem ir Estraven Truth

Character in The Left Hand of Darkness

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"Light is the left hand of darkness"

"A man who won't work cannot love, and a man who won't love is a man who won't work"

"You cannot buy the wind"

"Shame is a barrier to love"

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."