It was a lie but he believed in telling lies to people. Truth telling and medicine just didn't go together except in dire emergencies, if then.

Never let a domestic quarrel ruin a day's writing. If you can't start the day fresh, get rid of your wife.

You cannot say 'no' to the people you love, not often. That's the secret. And then when you do, it has to sound like a 'yes'. Or you have to make them say 'no.' You have to take time and trouble.

Never get angry. Never make a threat. Reason with people.

She emptied her mind of all thought of herself, of her children, of all anger, of all rebellion, of all questions. Then with a profound and deeply willed desire to believe, to be heard, as she had done every day since the murder of Carlo Rizzi, she said the necessary prayers for the soul of Michael Corleone.

Even the strongest man needs friends.

‎"But you're the toughest son of a b!&€# i've ever seen.You never let anybody get near you.You never let anybody know what you really think.