Who said "A man must know his limitations."?

This quote is attributed to Davos Seaworth.

A man must know his limitations. - Davos Seaworth

"A man must know his limitations."

Davos Seaworth Patience

Character in A Clash of Kings

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"The gods are not done with us yet"

"The gods give with one hand and take with the other"

"Fire consumes, but it also reveals."

"A man must know when to hold and when to fold."

"Patience is a virtue I'm still learning."

"I may be a redhead, but I'm not a hothead."

"Patience is a virtue."

"Patience is a virtue I never learned."