Possibility means "freedom". The measure of freedom enters into the concept of man. That the objective possibilities exist for people not to die of hunder and that people do die of hunger, has its importance, or so one would have thought. But the existence of the objective conditions, of possibilities or of freedom is not yet enough: it is necessary to "know" them, and know how to use them.
Antonio Gramsci, Selections from the Prison Notebooks
freedom, knowledge, possibility