Quality: Feature or aspect of something that itself is not a
This is a fundamental idea and term, and therefore difficult to
define. Linguistically, a quality is what is
represented by a one-place
predicate, and in that role also known
as a property.
Note that it is rather doubtful that there are in reality any
qualities, in as much as what seem to be qualities to the human sensory
apparatus or brain, or what does correspond to a one-place predicate,
tend to be relations and more complex than they appear, in human
experience or human language.
See also: Predicate,
Aristotle, Brentano, Carnap, Cartwright, Eyck & Thysse, Jespersen,
Körner, Lyons, Strawson