I can’t think of a higher political priority for any country than the task of ensuring that all its citizens get an equal chance to make the best of themselves in life. Two hundred and fifty years ago, it was the first of the self-evident truths listed in the US Bill of Rights. And yet today there is still no nation in the world that can claim to have lived up to this high ideal in full.

And there is no profession anywhere that can say that it has done every single thing it can to open itself up to anyone on an equal basis.