But in his science fiction he achieved something more: something, I think, that the genre rarely manages to do. He was intensely political, and he infused his science fiction with a conviction that a future was possible in which people could live better — he brought to the task an an angry, compassionate, humane voice that single-handedly drowned out the privileged nerd chorus of the technocrat/libertarian fringe and in doing so managed to write a far-future space operatic universe that sane human beings would actually want to live in (if only it existed).
– Charlie Stross on Iain Banks, who died on Sunday.