Theory C. in Sociology is a revised edition of earlier book on the topic under: Crescentology. A new role for sociologist. According to Theory C.which is a philosophical in nature, its origins, methods laws and framework are described. Theory C., calls for new interdisciplinary major in social sciences and a new role for Crescentologist career. The idea introduced here is open for possible discussion or application to promote peace and cultural normalization on both micro and macro levels.