“The laws of history are as absolute as the laws of physics, and if the probabilities of error are greater, it is only because history does not deal with as many humans as physics does atoms, so that individual variations count for more. Seldon predicted a series of crises through the thousand years of growth, each of which would force a new turning of our history into a pre-calculated path. It is those crises which direct us – and therefore a crisis must come now.”