You don't need to know a lot of philosophy to understand this text. You can make a list of inferences, or logical conclusions, to attempt to understand the author's purpose. First, if you have a text that you can write on, circle or highlight words you don't know and then look them up in a dictionary. From there you can make inferences based off what you already know about the topic and textual evidence to support your inference. This is also called analytical note-taking or "Says-Means-Matters" (What does the text SAY, what does it MEAN, and why does it MATTER?). Even if you're still not 100% certain, you can still generate a list of questions to bring to your class the next day to generate discussion and deepen your understanding. Hope that helps!