I
Apparently self-contradictory statement whose underlying meaning is revealed only by careful scrutiny.
Its purpose is to arrest attention and provoke fresh thought, as in the statement "Less is more." In poetry, paradox functions as a device encompassing the tensions of error and truth simultaneously, not necessarily by startling juxtapositions but by subtle and continuous qualifications of the ordinary meanings of words. When a paradox is compressed into two words, as in "living death," it is called an oxymoron.
II
[c mediumvioletred] (as used in expressions)
liar paradox
Olbers's paradox
paradoxes of Zeno