“This is your heart. Keep it locked until the chap turns up who has the key.”
“Putting food under lock and key was one of the great innovations of your culture. No other culture in history has ever put food under lock and key - and putting it there is the cornerstone of your economy.[...] Because if the food wasn't under lock and key, Julie, who would work?”
“Jealousy is the lock that closes your heart, understanding is the key that opens it.”
“A man who is of 'sound mind' is one who keeps his inner madman under lock and key.”
“My heart to you is given: Oh, do give yours to me; We'll lock them up together, And throw away the key.”
“Either the key to a man's wallet is in his heart, or the key to a man's heart is in his wallet. So, unless you express your charity, you are locked inside your greed.”