'Pebbles on the Shore' is a collection of essays written by Alfred George Gardiner, who penned it under the pseudonym Alpha of the Plough. His essays were well-regarded in his time. His uniqueness lay in his ability to teach the basic truths of life in an easy and amusing manner. This essay collection is one of his best-selling ones, and featured titles such as 'On Seeing Visions', 'On Black Sheep', 'The Village and the War', and 'On Umbrella Morals'.