What is Purgatory?

NOW ON VIDEO In the Vatican's approved Catechism books it states the following regarding Purgatory. "Augustine (Enarration on Psalm 37, no. 3) speaks of the pain which purgatorial fire causes as more severe than anything a man can suffer in this life, "gravior erit ignis quam quidquid potest homo pati in hac vita" (P.L., col. […]