My friendship with the great actor and director Alan Rickman did not have a particularly auspicious start.

The 'Guardian''s unique ownership structure safeguards our editorial independence from commercial or political interference and means we can reinvest any money we receive into this journalism that matters so much.

For 500 years after Gutenberg, the dominant form of information was the printed page: knowledge was primarily delivered in a fixed format, one that encouraged readers to believe in stable and settled truths.