Characterization of Mr. Collins

In the provided excerpt from a classic novel, the character of Mr. Collins is introduced at a social gathering. The author describes Mr. Collins as follows:

"Mr. Collins was a tall, well-built man of thirty, with a solemn aspect and a more than usually formal manner. His air was solemn, and he often spoke as if he were addressing an assembly. Amongst the guests, he was eager to impress, boasting his connections and the importance of his patroness with an unflagging enthusiasm that struck others as both pompous and peculiar."

This description serves to illustrate which of the following aspects about Mr. Collins' character?