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Philosophy

<OpenstaxParagraph>
	In the wake of the giants of Greek philosophy—Socrates, Plato, and Aristotle—some philosophers turned away from Plato’s ideal forms and toward materialism. In this, they can be seen as furthering a trend already present in the thinking of Aristotle. For Aristotle, there can be no immaterial forms—everything that exists has some material basis, though he allows an exception for his first cause, the unmoved mover.
</OpenstaxParagraph>
<OpenstaxParagraph>
	The <OpenstaxTerm>Epicureans</OpenstaxTerm> steadfastly rejected the existence of immaterial forms, unmoved movers, and immaterial souls. The Epicureans, like Aristotle, embraced <OpenstaxTerm>empiricism</OpenstaxTerm>, which means that they believed that all knowledge was derived from sense experience. This view was the basis of the revival of empiricism in 18th-century British thought and scientific practice. They espoused an ethical naturalism that held that in order to live a good life we must properly understand human nature. The ultimate goal of life is to pursue pleasure. Despite their disagreements with Plato and, to a lesser extent, Aristotle, the Epicureans agreed with their predecessors that human existence ought to be guided by reason.
</OpenstaxParagraph>
<OpenstaxParagraph>
	The two principal Greek Epicureans were <OpenstaxTerm>Epicurus</OpenstaxTerm> himself (341–270 BCE) and his Roman disciple <OpenstaxTerm>Lucretius</OpenstaxTerm> (c. 99–55 BCE). Although Epicurus’s views are characterized as hedonistic, this does not mean that he believed that we ought to be indiscriminate pleasure-seekers. Instead, he proposed that people could achieve fulfilling lives if they were self-sufficient and lived free from pain and fear. Of course, complete self-sufficiency is just as impossible as a life utterly free from pain and fear, but Epicurus believed that we should strive to minimize our dependence upon others while limiting the pain in our lives. <OpenstaxTerm>Epicureans</OpenstaxTerm> thought that the best way to do this was to retire from society into philosophical communities far from the hustle and bustle of the crowd. <OpenstaxTerm>Epicurus</OpenstaxTerm> and <OpenstaxTerm>Lucretius</OpenstaxTerm> saw the fear of death as our most debilitating fear, and they argued that we must overcome this fear if we were going to live happy lives.
</OpenstaxParagraph>
<OpenstaxParagraph>
	Lucretius developed Epicurean philosophy in a poem called <OpenstaxTerm><OpenstaxEm>De Rerum Natura</OpenstaxEm> (On the nature of things)</OpenstaxTerm>. This poem discusses ethical ideas, but physics provides its focus. Lucretius adopts a material atomism that holds that things are composed of atoms in motion. Rejecting religious explanations, he argues that the universe is governed by chance and exemplified by these atoms in motion. Although the Epicurean philosophers were critically responding to the work of Plato and Aristotle, it should be evident that they also have antecedents in Presocratic thought. We can see this in their atomism and their religious skepticism, which hearkens back to Xenophanes.
</OpenstaxParagraph>

4.2.6 Epicureans

1 Introduction to Philosophy

1.1 What Is Philosophy?

1.1.1 Historical Origins of Philosophy

1.1.2 How It All Hangs Together

1.2 How Do Philosophers Arrive at Truth?

1.2.1 Sources of Evidence

1.2.2 Logic

1.2.3 Conceptual Analysis

1.2.4 Trade-offs

1.3 Socrates as a Paradigmatic Historical Philosopher

1.3.1 “The Life Which Is Unexamined Is Not Worth Living”

1.3.2 Human Wisdom Is Worth Little or Nothing

1.3.3 The Importance of Doing No Harm

1.4 An Overview of Contemporary Philosophy

1.4.1 What Can You Do with a Philosophy Major?

1.4.2 An Overview of Your Philosophy Textbook

2 Critical Thinking, Research, Reading, and Writing

2.1 The Brain Is an Inference Machine

2.1.1 The Brain’s Adaptive Ability to Plan Ahead

2.1.2 The Evolutionary Advantage of Shortcuts

2.2 Overcoming Cognitive Biases and Engaging in Critical Reflection

2.2.1 Critical Reflection and Metacognition

2.2.2 Cognitive Biases

2.3 Developing Good Habits of Mind

2.3.1 Strive for Objectivity

2.3.2 Adopt Epistemic Humility

2.4 Gathering Information, Evaluating Sources, and Understanding Evidence

2.4.1 Start with a Strong Foundation

2.4.2 The SIFT Method (Four Moves for Student Fact Checkers)

2.5 Reading Philosophy

2.5.1 Prepare to Read

2.5.2 Engaging with Philosophical Texts

2.5.3 Pre-reading

2.5.4 First Read

2.5.5 Close Read

2.6 Writing Philosophy Papers

2.6.1 Identify Claims

2.6.2 Collect Evidence and Build Your Case

2.6.3 Organize Your Paper

3 The Early History of Philosophy around the World

3.1 Indigenous Philosophy

3.1.1 Challenges in Researching Indigenous Philosophy

3.1.2 Indigenous African Philosophy

3.1.3 Indigenous North American Philosophical Thought

3.1.4 Mesoamerican Philosophy

3.2 Classical Indian Philosophy

3.2.1 The Vedic Tradition

3.2.2 Classical Indian Darshanas

3.3 Classical Chinese Philosophy

3.3.1 Early Chinese Philosophical Thought prior to Confucius

3.3.2 Confucianism

3.3.3 Daoism

3.3.4 Mohism

4 The Emergence of Classical Philosophy

4.1 Historiography and the History of Philosophy

4.1.1 Presentist Approach

4.1.2 Contextualist Approach

4.1.3 Hermeneutic Approach

4.2 Classical Philosophy

4.2.1 Egyptian Origins of Classical Philosophy

4.2.2 Ancient Greek Philosophy

4.2.3 The Presocratics

4.2.4 Socrates and Plato

4.2.5 Aristotle

4.2.7 Roman Philosophy

4.3 Jewish, Christian, and Islamic Philosophy

4.3.1 Defining Jewish, Christian, and Islamic Philosophy

4.3.2 Early Jewish Philosophy

4.3.3 Early Christian Philosophy

4.3.4 Islamic Philosophy

4.3.5 Late Medieval Philosophy in Christian Europe

4.3.6 Jewish Philosophers in the Christian and Islamic Worlds

4.3.7 The Rise of Reason in the Early Modern Era

5 Logic and Reasoning

5.1 Philosophical Methods for Discovering Truth

5.1.1 Dialectics and Philosophical Argumentation

5.1.2 The Use of Reason to Discover Truth

5.1.3 Testing Hypotheses

5.1.4 Laws of Logic

5.1.5 Normativity in Logic

5.2 Logical Statements

5.2.1 Conditionals

5.2.2 Universal Statements

5.3 Arguments

5.3.1 Getting to the Premises

5.3.2 The Difference between Truth and Logic

5.4 Types of Inferences

5.4.1 Deductive Reasoning

5.4.2 Inductive Inferences

5.4.3 Abductive Reasoning

5.5 Informal Fallacies

5.5.1 Fallacies of Relevance

5.5.2 Fallacies of Weak Induction

5.5.3 Fallacies of Unwarranted Assumption

5.5.4 Fallacies of Diversion

6 Metaphysics

6.1 Substance

6.1.1 Fundamentality: The One and the Many

6.1.2 Ontological Perspectives on Substance