Final answer:
The passage explores the concept of extremism and suggests that we can be extremists for positive causes, exemplified by figures like Jesus and Lincoln.
Step-by-step explanation:
The passage "The summary of 31" primarily explores the concept of extremism by examining historical figures who were considered extremists in their time. It asserts that extremism is not inherently negative, as it can be associated with both destructive and constructive forces. The passage uses the examples of Jesus, Amos, Paul, Martin Luther, John Bunyan, Abraham Lincoln, and Thomas Jefferson to illustrate how these individuals were extremists for causes such as love, justice, and equality. By framing the question "what kind of extremists we will be," it encourages the reader to reflect on what principles they are willing to be extremist for, implying that we should aspire to be extremists for positive and just causes, much like the figures mentioned.