The thought of every group is seen as arising out of its life conditions. Thus, it becomes the task of the sociological history of thought to analyse without regard for party biases all the factors in
the actually existing social situation which may influence thought. This sociologically oriented history of ideas is destined to provide modern men with a revised view of the whole historical process.
Today, there are too many points of view of equal value and prestige, each showing the relativity of the other, to permit us to take any one position and to regard it as impregnable and absolute. Only this socially disorganized intellectual situation makes possible the insight, hidden until now by a generally stable social structure and the practicability of certain traditional norms, that every point of view is particular to a social situation.
As long as one does not call his own position into question but regards it as absolute, while interpreting his opponents' ideas as a mere function of the social positions they occupy, the decisive step forward has not yet been taken … the general form of the total conception of ideology is being used by the analyst when he has the courage to subject not just the adversary's point of view but all points of view, including his own, to the ideological analysis.