This summary provides the key details and events from the document:
Robinson Crusoe spent 27 years as the sole survivor on an island after being shipwrecked. During this time, he encountered signs of other humans like bones on the beach but never saw anyone. He eventually rescued and befriended Friday, teaching him English and Christianity. After several more years and encounters with other people, including the arrival of English sailors, Robinson and Friday left the island on an English ship after Robinson had been away for 35 years.