B. 1949; MA 1971, University of Warsaw; PhD 1975, post-doctoral degree (habilitacja) 1985 (also UW); titular professor since 1996. Has worked at the Institute of History, University of Warsaw since 1971 as intern lecturer, assistant lecturer, assistant professor, senior lecturer, associate professor and full professor since 1999. Dean of the Faculty of History, University of Warsaw, 2005-2008. Deputy Rector of the University of Warsaw 2008-2012; editor of Przegląd Historyczny, member of the Polish Philological Society, Polish Historical Society, Central Committee of the History Contest, Committee on Ancient Culture, Polish Academy of Sciences, member of the editorial board of Palamedes. A Journal of Ancient History.
- Greek Commanders in the 5th and 4th Centuries B.C. Politics and Ideology: A Study of Militarism, Warszawa 1979;
- Pojęcie równości w greckich koncepcjach politycznych. Od Homera do końca V wieku p.n.e., Warszawa 1988;
- Religijność starożytnych Greków, Warszawa 1994;
- Starożytna Grecja okresu archaicznego i klasycznego, Warszawa 1999;
- Storia dell' antichità in URSS (1917-1956), Index. Quaderni camerti di studi romanistici, t. 28, 2000, pp.89-116;
- Cenzus wieku dla członków ateńskiej boule, Przegląd Historyczny, vol. 92, 2001, pp.155-160.