An elderly lady goes to see an attorney to have her will changed. The attorney charges the lady $300 and says she can pick up the will the next day. So the next the lady shows up the next day and gives the attorney an envelope, which she says contains three $100 bills. She takes the will and leaves. The attorney opens the envelope and finds there are actually four $100 bills, two of them had stuck together so the elderly lady was not aware she had overpaid the attorney. Now the attorney has an ethical decision. Should he tell his partner?