Francis Cook’s ‘hard-nosed reading of Buddhism’, and in particular of the practical meaning of śūnyatā, is extremely powerful and challenging. It does not ‘leave everything as it was’, in the Wittgensteinian mode, but demands a total conversion of viewpoint. Its message is, as he says, ‘chilly and uncompromising’. I want to apply a questioning thermometer, not so much to measure how chilly it is as to see precisely where the chill is located. Does Buddhism present itself as the cold truth concerning the ultimate nature of reality or of the way in which that reality seems from our present deluded, because ego-centred, point of view?