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Two thinkers, side by side

Life

Portrait of Hannah Arendt
Hannah Arendt

1906 CE – 1975 CE

PoliticalContemporaryGerman

Born Berlin

She watched a Nazi bureaucrat testify at his trial and understood something terrible: evil does not require monsters.

Portrait of Jürgen Habermas
Jürgen Habermas

1929 CE

Critical TheoryContemporaryGerman

Born Düsseldorf

He argues that legitimate authority requires genuine public reasoning, and that this is not a utopian ideal but a practical demand.

Connection

Hannah Arendt public sphere and communicative reason Jürgen Habermas — Arendt's analysis of the political realm as the space of appearance, argument, and plural action is a central source for Habermas's theory of communicative rationality and the public sphere.

Ideas

JusticeInner Freedom
ReasonToleranceThe Categorical Imperative

Words

“There are no dangerous thoughts; thinking itself is dangerous.”

— Hannah Arendt

“The smallest act in the most limited circumstances bears the seed of the same boundlessness, because one deed, and sometimes one word, suffices to change every constellation.”

— Hannah Arendt

“Reaching understanding is the inherent telos of human speech.”

— Jürgen Habermas

“Modernity — an incomplete project.”

— Jürgen Habermas

Key Moments

1933-51

Eighteen years as a stateless person

1961-63

Eichmann in Jerusalem and the banality of evil

1956

Joins the Frankfurt School under Adorno

1981

The Theory of Communicative Action

Works

The Origins of Totalitarianism

Knowledge and Human Interests

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Volume I · Ancient Greece · 624-262 BCE