consciousness

Morphology

Latin conscius joins con- (with, together) to scire (to know). A conscius person is one who knows with: with another, with oneself, with a knowledge that is shared or inward. English consciousness, from the seventeenth century, inherits this: a knowing that is not solitary in its grammar, even when it feels private. Conscience, a close cousin, kept the moral “with”: knowing with a standard. Consciousness kept the inner light, and slowly became a name for the fact of experience itself.

Semantic range

Wakefulness, inner show, moral witness, self-knowledge, what-it-is-like.

History of the word

Locke uses consciousness for the mind’s knowledge of its own operations. The word then travels through medicine (loss of consciousness), psychology (James’s stream), phenomenology, and now the laboratories that try to find its neural correlates. It has never been a single object. It has been a family of uses: wakefulness, report, self-knowledge, what-it-is-like, moral witness. This house does not pick one and exile the others. It lets the family visit.

A timeline of usage

1. Latinconscius: knowing with, sharing in knowledge
2. 17th c.English consciousness enters moral and mental speech
3. 1690Locke: the mind’s knowledge of its own operations
4. 19th c.Medicine: loss of consciousness as a clinical fact
5. 1890James: a stream, not a thing
6. 20th c.Laboratories hunt neural correlates, and do not close the word

A key source

John Locke

An Essay Concerning Human Understanding (1690), II.27, on consciousness and personal identity.

Associated traditions

Parallels, not equivalents. Different attempts to notice something about knowing.

• Sanskrit / Pali

  vijñāna / viññāṇa

  A discriminating knowing; in Buddhist analysis, an aggregate that arises and ceases, not a soul.

• Greek

  suneidēsis

  A knowing-with, often moral; related to syneidēsis, conscience.

• Arabic

  shuʿūr / waʿy

  Awareness, feeling; later philosophical Arabic also borrows and rebuilds Greek distinctions.

• Chinese

  yìshí 意识

  A modern compound for consciousness; classical texts speak otherwise: of heart-mind (xīn), of spirit, of naming.

A distant linguistic echo

suneidēsis

Greek · A knowing-with, often moral; related to conscience as much as to inner light.

How the word shifts

In ordinary English, consciousness still means both “not knocked out” and “the inner show.” Science often needs the first. Philosophy often needs the second. Spiritual traditions may refuse the noun entirely and speak of awakening, presence, or the witness. The shifts are not errors. They are the word doing too much work, which is why the house also keeps awareness, mind, soul, and self.

A story where the word matters

• The Fire and the WallAthens · c. 375 BCE
• The Stream of ThoughtCambridge, Massachusetts · 1890
• When the Lights Go OutOperating theaters everywhere · 1846 to now
• The Door with a Seam of ColorA gray room that does not exist · 1982
• The Imitation GameManchester, on the page of Mind · 1950
• Beneath the FigUruvelā, later Bodh Gayā · c. 5th century BCE
• What It Is LikePrinceton, on the page of *The Philosophical Review* · 1974
• Beside the StoveA stove-heated room in Germany, later on the page from the Netherlands · 1619 / 1641

Nearby words

Neighbors, not translations of one concept.

• awareness
• mind
• witness
• self

From this word

If the word means knowing-with, who or what is the with?