Too Like the Lightning by Ada Palmer

Mycroft Canner is a convict. For his crimes he is required, as is the custom of the 25th century, to wander the world being as useful as he can to all he meets. Carlyle Foster is a sensayer, a spiritual counsellor, in a world that has outlawed the public practice of religion, but which also knows that the inner lives of humans cannot be wished away. The world into which Mycroft and Carlyle have been born is as strange to our 21st-century eyes as ours would be to a native of the 1500s. It is a hard-won utopia built on technologically-generated abundance… Read more.