The Renaissance's 'Laughing Philosopher': ourown age's 'prophet of quark' : throughout modern philosophical traditions, Democritushas been a man little known beyond his labels. Yet if the image of the cheerful ironist understates his true seriousness, that of father of modern nuclear physics - though by no means entirely unfounded - loses sight of the man in the hyperbole. Flattering as it is, it fails to do justice either to the full range of Democritus' interests or to the astonishing originality of his ideas as Paul Cartledge makes clear in this enthralling book.