Who said "The Don's greatest strength was his patience."?

This quote is attributed to Tom Hagen.

The Don's greatest strength was his patience. - Tom Hagen

"The Don's greatest strength was his patience."

Tom Hagen Patience

"I'm a consigliere, not a driver."

"Never discuss business with a mouth full of food."

"A lawyer with his briefcase can steal more than a hundred men with guns."

"The Don has plans for you."

"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."