The Diamond Sutra by Osho, Watkins Publishing, London, 2010, 256 ff.
The Diamond Sutra is the earliest book to which a printing date can be assigned - 868 CE. It is a sacred scripture of Mahayana Hinduism and Buddhism and it was originally written down in Sanskrit. Like other sutras, it is a collection of mystical and spiritual aphorisms intended as subjects for meditation and thence guidance towards enlightened existence. Osho was the name taken by a 20th century Indian mystical philosopher who lectured on Buddhism in both the East and West.
This book was not written by Osho but represents transcriptions of his lectures and videos - rather like the Gospels in relation to Jesus, without the videos of course! It isn't an easy book to read because the language in which it is expressed has a different syntax. But if you read it in a relaxed and contemplative frame of mind, imagining that you are listening to the words of an Indian sage, you will find there is wisdom on every page. If you prefer to read the text in everyday English there is a good translation by Alex Johnson that you can dip into on-line.