The Public sphere is a common, intercommunicative 'space' in which different forms of communication (face to face as well as mediatized) are potentially interconnected. It is one of the three 'social imaginaries crucial to western modernity along with the citizen-state and the marker.
The Public sphere is conference in unrestricted fashion (based on the freedom of assembly, the freedom of association, the freedom to expression and publication of opinions) about matters of general interest, which implies freedom from economic and political control.
The Public sphere is a common world and stable background of artifacts, institutions, and settings that serve as the context for our activities.
The Public sphere is a space which, in contrast to the public sphere where beings come together to discuss, dissent and decide, is unable to give form to human uniqueness.
The Public sphere is common sense, 'the sixth and highest sense' which relates the 'five strictly individual senses' and their data into the common world.
The Public sphere is a common space that comes into being when citizens act in concert to manifest political freedom and equality.
The Public sphere is a kind of interface and intermediate sphere mediating between the economy, the state, and the realm of the family and intimacy. The 'public sphere is a warning system with sensors that, though unspecialized, are sensitive throughout society.
The Public sphere is a common space of disclosure for everyone who acts in it and perceives it. It is grounded in trust in action and speech as a mode of being together, neither the reality of one's self, of one's own identity, nor the reality of the surrounding world can be established beyond doubt.