The third Alan Watson Seminar was given by Professor Igor E. Mineo of Palermo University. Prof. Mineo gave a thoughtful and complex paper entitled ‘Historicizing the common good. The ambiguous relationship between “common good” and “commons”‘. In his lecture, Mineo analysed the progressive change in both language and meaning from ‘commons’ understood as specific, material things to ‘commons’ understood as what pertains to the common good of the polity. This change should be appreciated within the manyfold influences of Tomism on fourteenth century political thought, and its consequences may be seen throughout late medieval and early modern times.