This paper develops a new interpretation of Heidegger's concept of con
science in order to show to what extent his thought establishes the po
ssibility of civil disobedience. The origin of conscience lies in the
self's appropriation of language as inviting a reciprocal response of
the other (person). By developing the social dimension of dialogue, it
is shown that conscience reveals the self in its capacity for dissent
, free speech, and civil disobedience. By developing the social roots
of conscience, a completely new light is cast on the political implica
tions of Heidegger's thought.