The title character of another work goes to heaven with an angel named "Genius", but St. Peter denies him entry due to his numerous sins.
This man authored Matt Weiner's favorite children's story, entitled On Civility in Children. One work by this man contains 195 illustrated variations of the sentence "your letter pleased me greatly" and advocates the "abundant style" of writing and speech. He wrote a guide for future Holy Roman Emperor Charles V entitled Education of a Christian Prince, and in addition to his Copia, this man criticized the accumulation of wealth by the church in his Sileni Alcibiadis. The title character of another work goes to heaven with an angel named "Genius", but St. Peter denies him entry due to his numerous sins. He's more famous for a work that was illustrated by Hans Holbein the Younger, in which the title character represents this figure's own inner voice and constantly chastises him. For 10 points, name this  author of Julius Exclusus and In Praise of Folly, a Dutch Humanist.
This man authored Matt Weiner's favorite children's story, entitled On Civility in Children.
Desiderus Erasmus