“Neither a lender or borrower be for loan oft loses both itself and friend.” ~Polonious talking to Laeretes

By this, I think Polonious meant that when you either lend someone something or borrow something, it usually ends in a fight and you loose that friend or person. It’s just smarter if you are prepared, so you don’t have to borrow. Also, you probably shouldn’t lend things to people, since people might loose or break them. When you are prepared, you won’t have to worry about borrowing anything, so if everyone was always prepared, you wouldn’t have to lend anything to anyone either. I personally think that if the person is really trust worthy and responsible, it’s fine to lend them things. You need to make sure that you are being responsible and take really good care of things is someone is willing to let you borrow them.