Nominalism

[Agnes]

Originating in the teachings of the eleventh-century scholastic philosopher Roscellinus, whose Latin formula was, universalis [sunt] nomina. (universes are only names.)
This philosophical movement of sophists was based on the view that there is a profusion of truths - perhaps as many as there are people to believe them - but no single, final Truth, and that language makes its own reality.
Through the Nominalism idea, an argument, however firmly it seems to stand up, however [watertight] its logic, can always be demolished by contrary argument, if made by a skilled debater. - Man is the measure of all things.
Every angle can supported in some way by infinite interpretations. Therefore [falsehood] and truth [parish].

[Marquetta]

The doctrine that universals or general ideas are mere names without any corresponding reality, and that only particular objects exist; properties, numbers, and sets are thought of as merely features of the way of considering the things that exist. Important in medieval scholastic thought, nominalism is associated particularly with William of Occam.