The quote "Party actions are always directed towards a goal which is striven for in a planned manner. The goal may be a ‘cause’ ..., or the goal may be ‘personal’" is attributed to Max Weber, a German sociologist. Weber's analysis of social action and political behavior often focused on how individuals and groups pursue goals, either for ideological reasons (a "cause") or for personal gain. This quote reflects his ideas about the rational, goal-oriented nature of actions in social and political contexts.
Thus, the correct answer is Weber.