“The oppressed class, although the ideology of the oppressing class is imposed upon it, nevertheless elaborates religious, ethical and political ideas corresponding to its condition of life; vague and secret at first, they gain in precision and force in proportion as the oppressed class takes definite form and acquires the consciousness of its social utility and of its strength; and the hour of its emancipation is near when its conception of nature and of society opposes itself openly and boldly to that of the ruling class.”