Abstract
In a posthumously published paper, Fr. W. Norris Clarke, S.J., declares that Thomistic personalism is the most creative and fruitful development in twenty-first century Thomism. I agree with Clarke, and I would also add that Thomistic personalism is the most creative and fruitful development in twenty-first centurymoral and political philosophy. Thus, in this paper—focusing on clarification and exhortation—I (i) identify the main commitments of personalism; (ii) identifyweak, moderate, and strong versions of Thomistic personalism; and (iii) suggest that Thomistic personalism is a vocation for the twenty-first century that requirescollaboration between specialists from diverse backgrounds.