Step 1: Understanding Berlin’s Concept of Freedom.
Isaiah Berlin conceptualized two types of freedom:
1. Negative Freedom: The freedom from external interference or coercion. It focuses on the absence of constraints.
2. Positive Freedom: The freedom to act according to one's own will and pursue one's own goals, which may require the state to intervene or support individuals to realize their potential.
Step 2: Analysis of options.
- (1) J. J. Rousseau: Rousseau emphasized general will and social contract but did not specifically categorize freedom into positive and negative types.
- (2) Hegel: Hegel's concept of freedom was related to the dialectical development of history, not directly to the distinction between positive and negative freedom.
- (3) Jean Francois Lyotard: Lyotard focused on postmodernity and the "incredulity toward metanarratives," not on the concept of freedom in the way Berlin did.
- (4) Isaiah Berlin: This is the correct answer. Berlin introduced the well-known distinction between positive and negative freedom.
Step 3: Conclusion.
The correct answer is (4) Isaiah Berlin.