Even as a young man, Vito Corleone became known as a "man of reasonableness." He never uttered a threat. He always used logic that proved to be irresistible. He always made certain that the other fellow got his share of profit. Nobody lost. He did this, of course, by obvious means. Like many businessmen of genius he learned that free competition was wasteful, monopoly efficient. And so he simply set about achieving that efficient monopoly.

Power wears out those who do not have it.

there was no greater natural advantage in life than having an enemy overestimate your faults, unless it was to have a friend underestimate your virtues.

Life is like a box of Hand grenades,You never know what will blow you to kingdom come

Many young men started down a false path to their true destiny. Time and fortune usually set them aright.

Leave the gun. Take the cannoli.

It was not perhaps the warmest friendship in the world, they would not send each other Christmas gift greetings, but they would not murder each other.