Hindu scripture. Composed in Sanskrit between 900 and 600 BC, the Upanishads presented here are by far the oldest and most important of those that exist. Adventures in Religion discussion group explores The Thirteen Principal Upanishads, Translation by F. Max-Müller, revised by Suren Navlakha, with an introduction and notes by Suren Navlakha. Hertfordshire: Wordsworth Editions Limited; 2000. ISBN-10: 1-84022102X. ISBN-13: 978-1840221022. Paperback. (Please be sure to get either of the ISBNs cited here, so that we will all have the same edition.) John Adams Room. For adults.