Abstract
The article tackles with the role that Kantian notion of temperament plays within his theory of practical freedom. With this purpose, we will connect Kant’s approach to temperaments with the classical Greek approach to this principle of classification, in order to recognize in it the means to feel the passage of time and also the conditions of our relation to the world, that is, a physiological-empirical background for the exercise of freedom that, without being moral, shelter contents which reason will only try to reform, without expecting to silence it entirely. Our final goal is to extract relevant observations to answer adequately to Kant’s question What is Man?