Notes, summaries, assignments, exams, and exercises for Philosophy and ethics for Baccalaureate

Descartes' Philosophy: Rationalism and the Cartesian Method

Rationalism

Descartes was the founder of rationalism, which posits that reason is the superior source of knowledge and provides us with truths.

Cartesian Method

Descartes' conception advocated for the unity of knowledge, meaning all knowledge is based on reason. However, it is necessary to understand its structure to achieve it. To do this, he took mathematics as a model and used the appropriate method. Reason is based on intuition, which enables simple concepts without error, and deduction, which is deriving knowledge from several intuitions. The discourse of the method consists of:

• **Evidence:** Nothing can be taken as true without knowing what it is.
• **Analysis:** Divide complex problems

Plato's Dual Reality: Sensible and Intelligible Worlds

Foundations of Plato's Metaphysics

The reality, for Plato, is dual, characterized by a fundamental hierarchy: the distinction between the sensible reality and the intelligible reality. For the characterization of the sensible world, Plato draws upon the principles of Heraclitus, emphasizing change and flux. Conversely, for the intelligible world, he adopts the principles of Parmenides, highlighting permanence and unity.

The Essence of Platonic Forms (Ideas)

Characteristics of the Forms

In the Platonic conception of reality, the most real objects are the Ideas (or Forms), serving as the ontological cause of all that exists at the sensible level. They are ontologically primary and epistemologically...

Knowledge and Empiricism

Hume, taking empiricism to its ultimate consequences, refused to formulate hypotheses, arguing that the passage from particular experience to general law cannot be rationally justified. He sought to discover psychological laws and base knowledge on them, setting real limits to what we can know. Hume stressed that our ideas are merely representations of reality, and the laws of nature are never certain. He identified two elements of consciousness: impressions (perceptions) and ideas (representations of impressions in the mind). Ideas derive from impressions and are weaker, less vivid versions of them. Ideas can be simple or complex, but there are no innate or abstract ideas. An idea is true if it corresponds to a sensory...

The Sophists

Their Focus on Practical Reality and Ethics

The Sophists directed their analysis to practical reality, particularly politics and ethics. Traveling extensively, they offered their teaching services for a fee. These professional educators aimed to help citizens achieve social success by teaching rhetoric, oratory, and eristic (the art of argumentation).

Sophists vs. Philosophers

Unlike philosophers, who sought knowledge and truth, the Sophists were more like trainers who imparted knowledge for social advancement. They viewed knowledge as a tool for social privilege, not a means to discover truth.

Two Types of Relativism

1. Theoretical Relativism: This view holds that reality depends on one's perspective. From this standpoint, reality is

Plato's Theory of Knowledge and Ideas

This theory serves as a benchmark for subsequent philosophers, though it underwent revisions and internal doubts by Plato himself. It affirms the existence of two distinct realms:

The Intelligible World (The Ideas)

Ideas represent the essence—that by which a thing is. They are known only by intelligence.

• Each Idea is unique, eternal, immutable, non-corporeal, and non-sensitive.
• They function as the cause and model of all things in the sensible world.

The Sensible World (The Things)

Things are corporeal, sensible, and temporal. They are copies or reflections of the Ideas and become intelligible through their participation in the Ideas.

• The sensible world is visible, tangible, and subject to change.

Plato clarifies...

The Soul and Its Essence

Like Plato, Aristotle believed that humans are composed of body and soul. He viewed the soul as the form of the body, making it the essence of humanity. Aristotle distinguished three types of souls:

• Vegetative (plants)
• Sensitive (animals)
• Rational (humans)

Each type of soul imbues the being with its own tendencies. Humans, possessing a rational soul, are distinguished by their capacity for reason.

Human Activity and its Purpose

Aristotle argued that all human activity aims towards a certain end. He differentiated between praxis, actions performed for their own sake, and poiesis, actions performed for the sake of something external. He posited that the ultimate aim of humanity is eudaimonia, often translated as happiness...

Descartes

Descartes, a rationalist, believed that true knowledge comes from pure reason. He argued that the senses are misleading and do not provide a true vision of reality, citing illusory illnesses as an example. Geometry, based on pure reasoning, was considered the only reliable source of knowledge. Descartes also defended the existence of innate ideas—knowledge present from birth—such as the existence of God and infinity.

Hume

Hume, an empiricist, believed that experience is the only reliable source of knowledge. He likened the mind to a blank slate filled by lived experiences. Only what could be sensed was considered true and real, leading Hume to critique science, metaphysics, and religion.

Kant

Influenced by Hume, Kant sought to reconcile...

Descartes: Historical, Cultural, and Philosophical Context

René Descartes (1596-1650) was born in La Haye, France. In 1616, he obtained a degree in Law from Poitiers. However, Descartes was disappointed with his education, a sentiment he would later express in *Discourse on Method*. He found scholastic philosophy unsatisfying, although much of the terminology he later used was taken from it. Descartes found satisfaction only in mathematics. Consequently, he made the decision to "completely abandon the study of literature and, determined not to seek another science than that which I could find in myself or in the great book of the world, I spent the rest of my youth traveling, seeing courts and armies, treating people of different moods and...

Cultural Relativism: A Critique

One can only be judged by the standards and morals of their culture because morality is determined by each culture. You can't judge any culture outside of your own because you don’t understand why they believe what they believe. However, if enough people are part of that culture and believe that what they are doing is good, then there must be some truth in that.

If cultural relativism was universally supported and believed to be true, then there shouldn’t be any international governing bodies such as the United Nations or the European Parliament. This is because, under cultural relativism, you should be accepting that each culture has its own opinion on what is good and bad, and from an outside perspective,...

Hobbes's State of Nature and the Origin of Society

1. The State of Nature

Modern thinkers like Hobbes and Rousseau agree on the possibility of a state of nature without society, diverging from classical and medieval thinkers such as Plato and Aristotle, who believed humans were inherently social. Aristotle famously stated, "For living without society, you need to be a God or a Beast." Even today, some agree with this classical perspective. Hobbes, however, envisioned a state of nature defined by specific human characteristics:

• Selfishness and Instrumental Reason: Reason serves as a tool for selfish pursuits, driven by passions and desires.
• Equality: Despite minor differences in strength or ability, everyone is fundamentally equal because even