Hobbes argues subjects must grant absolute, inalienable authority to a sovereign to escape the state of nature's war. Sovereignty is absolute because any constraint weakens security and invites conflict. This grounds absolute rule in rational self-interest and necessity for peace rather than divine right or tradition.
From your study of Hobbes and the state of nature, you know the central premise: without political authority, human life defaults to a war of all against all — "solitary, poor, nasty, brutish, and short." Hobbesian absolutism is the direct implication of taking that premise seriously. If the only alternative to unlimited government is unlimited insecurity, then rational agents have compelling reason to accept unlimited government.
The argument has an internal logic that is hard to escape given Hobbes's starting point. By entering the social contract, we give up the right of nature — our unlimited liberty to do whatever we judge necessary for self-preservation. We hand this over to a sovereign who then enforces the law on our behalf. But the contract only delivers what we entered it for — security — if the sovereign is actually powerful enough to enforce against everyone, including the strong and the rebellious. Any limitation on sovereign power creates a gap: a domain where the sovereign's authority doesn't reach, and into that gap, conflict returns. Therefore sovereignty must be absolute: undivided, inalienable, not subject to any higher legal authority. Two competing powers are effectively no power at all.
This is importantly different from absolutism based on divine right or inherited tradition. Hobbes grounds absolute authority in rational self-interest: even under a harsh or unjust sovereign, you have a compelling self-interested reason to obey, because the alternative — the state of nature — is worse than even a bad government. Hobbes allows exactly one exception: if the sovereign directly threatens your life, the contract's entire purpose is defeated, and you recover the natural right of self-preservation. Short of that, no appeal to justice, natural rights, or moral law can justify rebellion — because any disorder risks collapsing the entire structure that makes civil life possible.
What makes Hobbesian absolutism philosophically significant beyond its 17th-century context is the tension it reveals at the heart of social contract theory. If we ground political authority in consent and rational self-interest, we might expect liberal constraints on government. But Hobbes demonstrates that the same foundations — consent, self-interest, the need for security — can generate an extremely powerful and unrestrained state. The question that Locke, Rousseau, and Kant had to answer was: which of Hobbes's premises can be challenged to yield a more limited government while preserving the rational-consent foundation? The answers they gave — different views of natural rights, the general will, the state of nature itself — defined the landscape of liberal political theory.
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