What is metaphysics? - A main branch of philosophy whose roots date back to the time of the ancient Greeks 2500 years ago
Metaphysical Philosophers - Immanuel Kant (a “bottomless abyss" and a “dark ocean without a shore”), William James (“nothing but an unusually obstinate way to think clearly”)
Introduction to Metaphysics:
Term originated when Aristotle’s essays on problems about the categories of being were listed in early library catalogues after his works on physics philosophers began to call these writings “the books that come after the physics”
Topics Falling Under Metaphysics:
Metaphysics from a Christian Perspective
What is the big deal about reality?
Let’s look at an example:
Your 5-year-old brother can’t sleep with the lights off because “something’s in my room.” You try to convince him that there’s nothing there, but he insists: “They’re real; I’ve seen them.” You ask him, “if the ‘things’ are real, where do they go when I turn on the lights?”. He replies, “Sometimes you can see them, but sometimes you can’t. They’re spirits, and they’re waiting for me in the dark.” You reassure him “just tell yourself that they aren’t real” and you turn off the lights.
Why is the child afraid of the dark?
What do you mean when you say that spirits are not real?
You might answer:
What grounds do you have for this belief?
Many intelligent people suspect that spirits are real…. are they wrong?
Don’t virtually all religions declare that reality is more than the material world?
Doesn’t God (or the gods) have to constitute a kind of reality that is different from material reality?
Not just spirits and God raise questions about what we admit to be real.
Consider justice, goodness, liberty, truth, beauty, love…
Go back to the example above:
Consider the implications of telling your brother that the spirits “aren’t real.” Aren’t you trying to convince him that:
If these are the implications of saying something is UNreal, what are the implications of saying something IS a part of reality?
Metaphysical questions about what reality is are among the most significant questions we can ask:
Something to think about…..
Our beliefs about reality will profoundly affect what we do with our lives and what we strive for.
]]Materialism or Non-Material?]]
%%St Augustine%%
^^Eastern Materialism: ^^%%Charvaka philosophers of India (600 BCE%%
Aka the Lokyata (those who go the worldly way)
Believed we should seek out happiness in this material world and its physical pleasures.
Felt people should turn away from religion and delusions of religion. Religious worship and priests are pointless as God, souls rewards of heaven/hell do not exist.
Only one valid source of knowledge of the world: sense perception. What we perceive with our senses is physical and material. If we cannot know something, it cannot exist.
^^Western Materialism^^
Democritus (460- 360 BCE) believed reality could be explained in terms of matter. (everything is made of atoms)
Therefore, the universe consists of atoms and empty space. This includes the soul and reason.
Democritus’ ideas were eventually put aside in favour of more personal, and non-material, explanations of the universe.
In the 17th century, scientific methods turned attention back to materialism.
Copernicus, Kepler, Galileo, Newton showed the world can be quantified.
%%Thomas Hobbes%% **(1588 – 1679) :**We can know nothing of the world but measurable quantities. Only matter is real. Our mental states (sensations, thoughts, and emotions) are part of the material brain.
%%Julien Of-froy de la Mettrie%%****: In 1778 postulated humans are nothing more than complex machines in his book Man a Machine.
%%Pierre Laplace%%****: Opposed Newton’s idea of a mechanical universe regulated by God, Universe is self-regulating
^^Four Characteristics of Materialism:^^
^^Objections^^
%%Werner Heisenberg%% : “Principle of Indeterminacy” or Heisenberg Principle
Heisenberg believed subatomic particles didn’t have a determinate location and momentum until they interacted with an observer.
Therefore, it begs the question, is reality dependent on the mind?
]]Idealism]]
^^Historical Evidence of Idealism:^^
%%Plato%%: formalized early version of idealism.
%%Saint Augustine:%% in City of God tells readers the present world (flesh) is temporary, but the spiritual world is real. While we are a part of the physical world, we are meant to be citizens of the spiritual world of God.
%%George Berkeley:%%
Founder of modern Idealism. He reacted against Hobbes’ views on materialism. Berkeley claimed the conscious mind and its ideas and perceptions are the only reality.
He denied this world is external, independent of the mind. Only the mind, spirit and its ideas ultimately matter.
He claimed all things are mind dependent which can be viewed as dependent on my mind (subjective idealism) or another mind such as God (objective idealism).
^^Berkeley’s Argument^^****:
\
Subjective Idealism | Objective idealism |
---|---|
World consists of only my mind and things are dependent on the mind. \n Everything I perceive is the sum of my perceptions of that thing. \n My own perceptions, everything I perceive is me-dependent. However, not all contents of mind are the same. Two kinds of ideas in my mind:→ Short lived, changeable and within my control (i.e. imagining a purple winged horse)→ Others are orderly, regular, enduring and not under my control. They occur in a sequence, with regularity. They must be the work of a supreme mind: God. | Independent of my mind and perceptions Advantage: accounts for regulation of our experiences; allows the world to be viewed as an intelligible system because it is the product of the mind. Explains why if you open/shut eyes, the world is the same. It is the same because God makes sure it is. |
Idealism was the dominant philosophy of the 19th and 20th centuries.
Contemporary Canadian philosopher %%John Leslie%% (1940) says all things in the universe are thoughts in the mind of God.
^^Eastern Idealism^^
Indian philosopher %%Vasubandhu%% (4th century CE) had similar views to Berkeley.
%%Question:%% If all perceptions are in our mind, why do things happen in specific positions in space and specific points in time? Why do events occur in the spatial and temporal world outside of us? Why do objects physically affect us?
%%Objections%%
%%Subjective idealism%%
%%Objective idealism%%
Dualism: material and non-material cannot interact because displace energy in the world, which should remain constant
%%The Ontological Argument%% : an argument for the existence of God deduced from the nature of Gods being made by ^^Anselm^^
Anselm reasoned that :
^^Kant^^ argued that this argument was flawed because it implies that existence is a characteristic of God to prove the argument/ that existence is a part of the concept.
%%The Cosmological Argument%%: the existence of an “uncaused cause” and “immovable movers” made by ^^Thomas Aquinas^^ based in Aristotle’s ideas
The cosmological argument states that:
This same argument format can also be made with the idea that things that exist must be caused by another thing that exists.
Some critics say that Newton’s findings disprove Aquinas, but others disagree
Others say that it is possible for a series of movers and causes to exist infinitely. Defenders of the cosmological argument use the Big Bang to show that the series is not infinite.
An aspect of the cosmological argument is @@infinite regress@@: an infinite series of movers and causes with a first member but no last member/ a beginning but no end.
Aquinas also believed that even if the universe had existed forever, the existence of this infinite chain would still need to be explained and God is the only explanation.
Hume responds to Aquinas that if each individual motion or cause is explained by a previous one, the chain does not need any more explanation
Critics say that if everything has a cause, mustn’t God also have a cause? Aquinas says that there is 1 uncaused cause, and that it is God.
%%The Design Argument%%: states that order and purpose in the world demand a God.
An example of the design argument is the “Divine Watchmaker”, supported by ^^William Paley^^, which states that:
Hume objects to the design argument by stating that we have no knowledge that the world works like a watch or artifact, and we know how artifacts are made whereas we don’t know how the universe was made, so we do not know if the universe was made by an intelligent being.
Darwin’s theory of evolution through natural selection can disprove the design argument
Defenders of the design argument state that one can belief that evolution is the way God produces living things.
^^Dembski^^, one of Paley’s defenders and believers of intelligent design, stated that the specificity and improbability of genes implies that they were produced by God and not by chance.
Others argue that due to the slim chances of the current conditions of human life (the anthropic principle), it is improbable that these conditions would exist, suggesting that they were chosen by God.
Critics of this new argument suggest that for all we know, the anthropic principle can be caused by a physical process and not God.
%%Theistic Alternatives to Traditional Monotheism%%
Difficulties in the arguments for the traditional concept of God has led people to look for other ways to think of God
%%Atheism%%: denies the claims of all varieties of theism
%%Agnosticism%%: the position of not knowing whether or not God exists, many believing that it is wrong to believe one way or the other
%%Problem of Evil%%
%%Traditional Religious Belief and Experience%%
The Will to Believe