They all now waded back and went first across the smooth, wet sand and then up to the dry, crumbly sand that sticks to one's toes, and began putting on their shoes and socks. Edmund and Lucy wanted to leave them behind and do their exploring with bare feet, but Susan said this would be a mad thing to do. "We might never find them again," she pointed out, "and we shall want them if we're still here when night comes and it begins to be cold.