The social sciences and humanities are now being swept by a Tardean revival, a rediscovery and reappraisal of the work of this truly unique thinker, for whom 'everything is a society and every science a sociology'. Tarde is being brought forward as the misrecognised forerunner of a post-Durkheimian era. Reclaimed from a century of near-oblivion, his sociology has been linked to Foucaultian microphysics of power, to Deleuze's philosophy of difference, and most recently to the spectrum of approaches related to Actor Network Theory. In this connection, Bruno Latour hailed Tarde's sociology as "an alternative beginning for an alternative social science". This volume asks what such an alternative social science might look like.