The Chrysalids (Penguin Modern Classics)

Published in 1955 and still as relevant today. The idea that change is inevitable and therefore there is no such thing as 'the norm'. That difference should be embraced not feared. We should fear our own preconceived ideas and prejudices, not the people that we project those ideas on to. And ultimately it will be the arrogance of the human race that will be it's own downfall. Cheery stuff!