How does the author’s use of dialogue develop characterization and indirect characterization?

Which two sentences in this excerpt from theodore dreiser my brother paul are examples of characterization that suggest paul is a superstitious person?

Introduction to making a difference: it’s our world, too!

Which piece of information about doris lessing would more likely be found in the new york times article "doris lessing wins nobel prize in literature" than in the "doris lessing" biographical video? the opinion lessing has of the current political climate in south africa description of the home which lessing and her husband live in today