a gentleman and a scholar

Someone (usually a male, due to the gender implication of "gentleman") who is admirable or of high esteem. Although used sincerely as a compliment, it is generally bombastic and lighthearted in nature. Thank you for helping me move into the new house, you are truly a scholar and a gentleman.

A complimentary term for a person, especially one who has done you a favor. Back in the era when courteous behavior and academic achievement were prized far more highly than they are today, acknowledging a kindness, such as holding the door or relinquishing a place on line so that someone else could get a taxi, would be met with a smile, a nod, and the phrase, “You are a scholar and a gentleman.”