From Galileo to Darwin, the heresies of today become the truths of the future. That has always been one of the principles of the Institute of Art and Ideas. It was a guiding theme in this year’s HowTheLightGetsIn festival, and it is at the forefront of our minds once more as the key thread that ties together the various strands of this issue of IAI News.

The focus this fortnight is how those defending the status quo respond to the heretics who challenge them. Particularly worrying is Nikolai Tolstoy’s account of his treatment by a politically-influenced judiciary in the 1980s and ‘90s. Such behaviour is not confined to history, however, as psychologist David Healy’s case demonstrates. This issue sees Healy speak out on the way dissenting doctors – of which he is one – are being intimidated into silence.