Logic as a science defines the structure of statement and argument and defines formulae by which these are codified. Implicit in a study of logic is the understanding of what makes a good argument and what arguments are fallacious. Students of classical logic were often made to memorize certain argument forms so that they could more easily create better arguments and disprove weaker ones thrown against them. The Jesuits emphasized this so highly, that their students were required to take part in a structured argument session with their peers.
The ultimate goal of logic, if it can be said to have a goal, is valid argumentation (see ValidIty).