Being editor-in-chief of the 'Guardian' and 'Observer' is an enormous privilege and responsibility, leading a first-class team of journalists revered around the world for outstanding reporting, independent thinking, incisive analysis, and digital innovation.

A newspaper is complete. It is finished, sure of itself, certain. By contrast, digital news is constantly updated, improved upon, changed, moved, developed - an ongoing conversation and collaboration. It is living, evolving, limitless, relentless.

The political solutions to the refugee crisis may be complex, but that does not mean we should abandon our humanity. We should not close our hearts, retreat behind walls, real or imagined, or ignore the pressing moral imperative to provide assistance and sanctuary for some of the world's most desperate people.

Facebook has become the richest and most powerful publisher in history by replacing editors with algorithms - shattering the public square into millions of personalised news feeds, shifting entire societies away from the open terrain of genuine debate and argument while they make billions from our valued attention.