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Full Idea
Lying can involve (1) speaking false words, (2) the intention to speak false words, (3) the intention of bringing about deception, and (4) the ultimate goal of one's deception.
Gist of Idea
Types of lying: Speak lies, intend lies, intend deception, aim at deceptive goal?
Source
report of Thomas Aquinas (Summa Theologicae [1265], Q110) by Tuckness,A/Wolf,C - This is Political Philosophy 10 'Lying'
Book Ref
Tuckness,A / Wolf,C: 'This is Political Philosophy' [Wiley Blackwell 2017], p.239
A Reaction
It's a start, but much more is needed to clarify lying. Irony is an obvious problem with (1).