Who said "A man who cannot laugh at himself cannot be trusted."?

This quote is attributed to Vito Corleone.

A man who cannot laugh at himself cannot be trusted. - Vito Corleone

"A man who cannot laugh at himself cannot be trusted."

Vito Corleone Humor

"A man who doesn't spend time with his family can never be a real man."

"The greatest thing you can do is give back to those who gave to you."

"A friend should always underestimate your virtues and an enemy overestimate your faults."

"Revenge is a dish best served cold."

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."