“So the three different bases are: you’ve had my money. Let’s say you just failed to invest it. Well, you have to pay, by way of interest, what it would have made if you had invested it. “Secondly, you’ve had my money and you’ve used it in your business. I don’t want to spend the time working out exactly what you’ve made in your business so I’m going to take 5%. “Thirdly, you’ve taken the money by fraud. You’ve kept it. I’ve no idea what you did with it. But I can elect for 5%, the higher rate, because you’re a fraudster and you’ve had my money and kept it. I don’t even have to go into what you’ve done with it.”
“Chancery courts had further regularly awarded interest, including not only simple interest but also compound interest, when they thought that justice so demanded, that is to say in cases where money had been obtained and retained by fraud, or where it had been withheld or misapplied by a trustee or anyone else in a fiduciary position…”