Science as a practice : ethos, logos, pathos -- Representations are social facts : modernity and post-modernity in anthropology -- On the archaeology of late modernity -- Georges Canguilhem : a vital rationalist -- Artificiality and enlightenment : from sociobiology to biosociality -- Galton's regret : of types and individuals -- Severing the ties : fragmentation and dignity in late modernity -- Steps toward a third culture -- American moderns : on sciences and scientists.