Karl Mannheim 
Ideology and Utopia, an Introduction to the Sociology of Knowledge [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Purely empirical aspect Of the investigation of the social determination Of knowledge. Social processes influencing the process of knowledge. Essential penetration of the social process into the perspective of thought. The Special approach characteristic of the Sociology of Knowledge. The acquisition of perspective as a precondition for the Sociology Of Knowledge. Relationism.