A new political technology emerged at the heart of Modernity, amachine called bio-power. In fact, preserving living beings is tobe ensured by power. This essay aims to describe the main features of this technology of power, beginning with an initial sketch onMichel Foucault's method –a nominalist one–, followed by anexamination of three perspectives on power and, finally, showing how something like an explosion and a quick development of several technologies subjugating bodies and controlling population were imposed during the classical period.
