Sound Arguments： An argument is sound just in case it’s valid and all its premises are true. (http://www.jimpryor.net/teaching/vocab/validity.html)
Valid Arguments： the conclusion is entailed by, or logically follows from, the premises. (http://www.jimpryor.net/teaching/vocab/validity.html)
Freedom of the will： is being able to have the will one wants to have.(Harry Frankfurt).
ad hominem argument; (argument against the person)：The informal fallacy of supposing that a claim should be denied due to some disqualifying feature of the person affirming the claim.
Economic freedom: The freedom to trade without governmental interference.
Enabling freedom: Freedom that is provided through education, road/postal systems.
Mental freedom: The ability to think what one wants.
Ontological freedom: The availability of known alternatives to a goal.
Methodological doubt: Doubt that any proposition, if there is the slightest reason to do so.
Foundationalism: Establishing a base of certainty that can support and entire system of knowledge
Whatever Comes Up 