Introduction
Thomas Hobbes' political philosophy, articulated systematically in his masterwork 'Leviathan' (1651), is fundamentally grounded in a mechanistic and pessimistic conception of human nature. Influenced by the scientific revolution and the violent turmoil of the English Civil War, Hobbes famously noted that 'fear and I were born twins,' establishing psychological egoism as the primary premise from which his entire political structure logically unfolds.
Scientific Materialism and Human Psychology
Hobbes approached the study of politics through the resolutive-compositive method inspired by Galilean physics, treating human beings fundamentally as 'matter in motion'.
- Mechanistic Reductionism: Hobbes reduced human psychology entirely to biological impulses, specifically appetites (desires drawing individuals toward pleasure) and aversions (forces compelling them to avoid pain).
- Redefinition of Felicity: Moving away from the classical Aristotelian notion of virtue or static moral goods, Hobbes defined 'felicity' as the ceaseless satisfaction of consecutive desires.
- Restless Desire for Power: Because resources are scarce and future satisfaction is uncertain, this pursuit of felicity generates a 'perpetual and restless desire of power after power, that ceaseth only in death.'
From Human Psychology to the State of Nature
Hobbes constructed his hypothetical pre-political 'state of nature' by logically aggregating these individual psychological drives in the absence of an overarching governing authority.
- Equality of Ability and Inherent Conflict: In the state of nature, individuals possess roughly equal physical and mental capacities, meaning anyone can kill anyone else. This equality, combined with competition for goods, diffidence (mutual distrust), and glory (reputation), leads inevitably to systemic conflict.
- War of All Against All: Without a common power to keep individuals in awe, life devolves into a condition where there is continuous fear and danger of violent death, famously rendering human existence 'solitary, poor, nasty, brutish, and short.'
The Social Contract and Absolute Sovereignty
The sovereign state emerges not as an organic moral community, but as a rational instrument necessitated by individual psychological survival.
- Primacy of Self-Preservation: Reason dictates that the supreme evil to be avoided is violent death. The fundamental 'law of nature' compels individuals to seek peace through mutual covenant.
- Creation of the Leviathan: Rational egoists surrender their natural rights to an absolute, indivisible sovereign in exchange for peace, order, and physical security.
- Limits of Obligation: Hobbes rejects any right to revolt over political grievances, asserting that divided authority invites anarchy. However, because self-preservation constitutes the sole reason for entering the contract, subjects retain the inalienable biological right to defend their own lives if the sovereign directly commands self-destruction.
Conclusion
Hobbes' rigorous deduction from psychological egoism to the necessity of an absolute sovereign demonstrated that divided authority is logically incompatible with civil peace. As later political theorists such as C.B. Macpherson highlighted in terms of 'possessive individualism', Hobbes seamlessly anchored political obligation in human nature, establishing the core tenets of modern political realism.