But," you may ask, "how can we forget the unkind things that are said...the cruel and unfair treatment one has received? How can we simply forget these things? It is not as simple as that!" There is just one sure way. Never talk about them, and never think about them. If you want to forget something, never speak even to your dearest friend about it. When it bobs into your mind, banish it at once. It will surprise you how quickly you can forget anything by that treatment.

J. Peter Marshall may refer to:
Peter Marshall (author) (born 1946) British author whose works include Demanding The Impossible: A History of Anarchism and Europe's Lost Civilization
Sir Peter Marshall (diplomat) British diplomat and former Commonwealth Deputy Secretary-General (1983-88)
Peter Marshall (police commissioner) (born c. Marshall (Peter James Marshall born 1933) historian Emeritus Rhodes Professor of Imperial History at King's College London
Peter Paul Marshall (1830–1900) Scottish civil engineer painter and partner in Morris Marshall Faulkner & Co.