Who said "A man's enemies often teach him more than his friends."?

This quote is attributed to Davos Seaworth.

A man's enemies often teach him more than his friends. - Davos Seaworth

"A man's enemies often teach him more than his friends."

Davos Seaworth Knowledge

"I am a man of humble birth, but I have served kings and lords, and I know the value of loyalty."

"The night is dark and full of terrors, but we must face them with courage."

"A good man keeps his word, no matter the cost."

"I've seen things that would break a lesser man, but I endure."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."