Introduction
In our previous lesson, we established the crucial distinction between using sources for exposition (explaining what a philosopher says) and using them for argumentation (building your own case). You learned that a strong philosophy paper moves beyond mere summary to actively engage with texts, creating connections and tensions to defend a central thesis.
This lesson takes the next logical step. Now that you know why you need to move beyond summary, we will focus on how to critically analyze the summaries and arguments of others. Our learning outcome is to evaluate the textual evidence used in a secondary source essay by cross-referencing it with the primary work.
This skill is the bedrock of original philosophical scholarship. It allows you to enter the academic conversation not as a passive recipient of information, but as an active, critical participant. For someone with your background in mathematics, you can think of this as "checking the proof." A commentator makes a claim about Merleau-Ponty's work and offers textual passages as evidence. Your job is to go back to the original text and determine if the evidence truly supports the claimâjust as you would check if the steps in a proof logically follow from the axioms and previously established theorems.
1. The Method of Critical Reading and Cross-Referencing
Before engaging with a specific example, it's essential to have a clear method. Reading philosophy critically, especially when comparing primary and secondary sources, is a dynamic process of dialogue with the texts.
A good philosophy paper rarely takes a secondary source's claims for granted. It treats them as interpretations to be tested. The video below provides excellent practical strategies for this kind of active engagement.
How to Read a Philosophical Text: Matters to Keep in Mind
In 'How to Read a Philosophical Text,' Gregory B. Sadler explains how to approach a text as a conversation. His advice on rereading, questioning the text, and engaging with secondary sources provides a strong framework for our task.
Please watch from 13:20 to 26:53, and then from 26:53 to 33:18. \nIn the first segment (13:20-26:53), focus on the questions he suggests asking the text: 'What's being said?', 'Who is saying it?', and 'Why is it being said?'. This is the core of exegetical work. \nIn the second segment (26:53-33:18), pay close attention to his discussion of secondary sources. He notes that you shouldn't take them as 'gospel truth' but as one scholar's interpretation, which you can then place into a wider conversation. This is precisely our goal today.
Sadler's advice gives us a clear four-step process for evaluating a secondary source:
- Understand the Secondary Source's Argument: First, read the secondary source to clearly identify its main thesis. What is the author arguing about the primary text? (Sadler's "What's being said?")
- Identify the Textual Evidence: Pinpoint the specific passages, concepts, or terms from the primary text that the secondary author uses to support their argument.
- Return to the Primary Source: Locate this evidence in the primary text. Read the surrounding pages to understand its original context. Does the meaning change when it's situated within the philosopher's broader line of thought?
- Evaluate the Use of Evidence: Compare the secondary source's interpretation with your own reading of the primary source in its context. Is the interpretation fair? Does it seem to ignore countervailing evidence? Does it stretch the meaning of the original text?
2. The Rules of Engagement: Citing and Assessing Views
When you perform this evaluation, you are holding the secondary source accountable to scholarly standards. The guide by Jim Pryor, which we consulted in the last lesson, outlines these standards clearly.
[PDF] Guidelines on Writing a Philosophy Paper
Pryor's 'Guidelines on Writing a Philosophy Paper' details how to properly present and assess the views of others. This is what we are evaluating a secondary source on, and what we must practice ourselves.
Please read the sections titled 'Presenting and assessing the views of others' and the following short section on 'Quotations.' Focus on the principles of getting the opponent's position 'exactly right' and the need to 'argue for your interpretation... by citing passages which support your interpretation.'
Pryor stresses two points that are vital for our task:
- Charity and Accuracy: You must represent the secondary author's view fairly and accurately before you can critique it.
- Evidence-based Interpretation: A good interpretation is not just asserted; it is argued for with direct evidence from the text. When we evaluate a secondary source, we are checking the quality of this argumentative link between their claim and their evidence.
3. Case Study: Language and the Primacy of Perception
Let's now apply this method to a concrete case. We will look at a book review that discusses a provocative interpretation of Merleau-Ponty's work.
The Secondary Source:
The text below is a review by David Morris of a book by Dimitris Apostolopoulos. Apostolopoulos argues that language is a "co-constitutive condition" of phenomenology for Merleau-Ponty, challenging the traditional view of the "primacy of perception."
Merleau-Ponty's Phenomenology of Language
This review, 'Merleau-Ponty's Phenomenology of Language,' will serve as our secondary source. We will focus on how the reviewer, David Morris, presents Apostolopoulos's central thesis and the textual basis for it, as well as Morris's own critical questions.
Please read the introduction and the first three sections of the review. Your goal is to identify: Apostolopoulos's main thesis about language in Merleau-Ponty's work. The specific distinction Apostolopoulos makes between sens (perceptual meaning) and signification (conceptual meaning). The reviewer's main criticism or point of tension: that Apostolopoulos's reading may be 'one-sided' and neglect what Merleau-Ponty calls 'silence' or what is 'prior' to language.
The Primary Source (via Commentary):
Apostolopoulos's argument engages directly with the ideas in Merleau-Ponty's preface to the Phenomenology of Perception. To cross-reference the claims, we need to return to that source. The following video lecture by John Russon, with which you are familiar, provides a detailed walkthrough of the key arguments from that very preface.
Merleau-Ponty, Phenomenology of Perception, 1: What is Phenomenology?
This lecture, 'What is Phenomenology?', closely follows Merleau-Ponty's text. It explains his foundational concepts of lived experience, the critique of science as a 'second-order expression,' and perception as the non-optional background of all acts. This will serve as our primary source material for evaluating Apostolopoulos's claims.
Please review these key sections from the lecture: 00:37 - 08:15: Focus on the idea that phenomenology is a practice of describing experience, and that this experience precedes conceptualization. 11:07 - 17:21: Pay close attention to the distinction between the 'lived world' and 'second-order expressions' like science. How does language fit into this picture? 24:50 - 30:23: Note the explanation of perception as 'the background against which all acts stand out,' and the distinction between 'operative intentionality' (the pre-reflective having of a world) and 'act intentionality' (thematic focus). \nThis material represents the traditional 'primacy of perception' view that Apostolopoulos is said to challenge.
Your Task: Evaluate the Evidence
Now, perform the cross-referencing. Using your understanding from the review and the lecture, consider the following questions. There's no need to write long answers; the goal is to practice the thought process.
- Apostolopoulos's Thesis: Apostolopoulos claims language is a "co-constitutive condition" of experience for Merleau-Ponty. This suggests language and perception are foundational partners.
- Merleau-Ponty's Words (via Russon): Russon explains that for Merleau-Ponty, we must "first awaken that experience of the world of which science is the second-order expression." Perception is the "background against which all acts stand out."
- The Point of Tension: Does Merleau-Ponty's emphasis on awakening a pre-conceptual, lived experience that is the source of second-order expressions (like science, and presumably, language) support the idea that language co-constitutes this primary experience? Or does it suggest perception is more fundamental, as the reviewer implies?
- The 'One-Sided' Critique: The reviewer, Morris, worries that Apostolopoulos's focus on language makes his reading "one-sided" and that he "lets A slip to the wayside" when analyzing a relation between A and B. Based on your review of Russon's explanation, what might be the "A" that Apostolopoulos is potentially downplaying?
To help organize your thoughts, you can use a structure like the one below. This is a powerful tool for breaking down and analyzing arguments.
Conclusion
Today we transformed a theoretical understanding of argumentation into a practical research skill. By learning to evaluate the textual evidence in a secondary source, you have developed the primary tool for entering into the scholarly debate surrounding a philosopher.
Key Takeaways:
- Evaluating evidence is a four-step process: Understand the claim, identify the evidence, return to the source, and evaluate the interpretation.
- Critical reading is a dialogue: You must read secondary sources actively, constantly asking questions and checking their claims against the primary text.
- Context is crucial: A quotation or concept can have a very different meaning when read within the flow of the philosopher's own argument.
- This process of evaluation is not just about finding fault; it is the primary method for discovering gaps in the existing literature and identifying opportunities for your own original contribution.
Preview of the Next Lesson:
You now know how to assess the evidence a commentator uses. In our next lesson, we will build on this to formulate a critique of a secondary source essay's argument or interpretation. You will learn how to take your evaluationâ"This author's use of evidence is unconvincing because..."âand structure it into a coherent, persuasive argument of your own.