Sentence

A sentence is a symbolic representation of a human premise which implies Purpose1. Humans and God have Purpose1. Thus the concept of
sentences is linked to
* Pragmatics
* Purpose1, will, volition
The terms used to express a premise are not the actual premise. Only sentences - representing premises - can be contradictions and tautologies. Oxymorons have the sense of being contradictory and pleonasms of being tautological - but they are neither. Only premises can be contradictory or tautological. 
=== Links ===
oxymoron, Pleonasm
* http://tautology.wikia.com/wiki/Sentences_have_no_meaning