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It is greater to exist necessarily than contingently

God is that than which nothing greater can be conceived

Therefore God exists necessarily not merely contingently

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A Five Minute Video Summary Of The Argument

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A Five Minute Video Summary Of The Argument

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Dean Zimmerman and Alvin Plantinga discuss the ontological argument for the existence of God. After Kant's, and others', critiques of Anselm, most philosophers regarded the ontological argument as a failed argument for theism--perhaps useful for theology, but not useful for demonstrating that God exists.

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God is that than which nothing greater can be conceived.

I have an idea of God.

It is greater to exist in the mind and in reality rather than only in the mind.

If I can conceive of God in my mind I can conceive of a greater entity i.e. a God that exists both in the mind and in reality

Therefore God exists both in the mind and in reality

Therefore God exists

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This programme about the ontological covers much of the material you need!

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The Ontological Argument, In Our Time - BBC Radio 4

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Melvyn Bragg and his guests discuss the Ontological Argument for the existence of God.

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OK so now you have to write something! Click on the document icon below to open a sheet for you to complete. Just write in the boxes. When you have completed the sheet print it for your notes and click submit so that I can check it.

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BBC Radio 4 - In Our Time With Melvyn Bragg

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EXTENSION:  Plantinga's Argument ( You can skip this if you are finding it tough going!)

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EXTENSION:  Plantinga's Argument ( You can skip this if you are finding it tough going!)

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1. A being has maximal excellence in a given possible world W if and only if it is omnipotent, omniscient and wholly good in W; and

2. A being has maximal greatness if it has maximal excellence in every possible world.

3. It is possible that there is a being that has maximal greatness.

4. Therefore, possibly, it is necessarily true that an omniscient, omnipotent, and perfectly good being exists.

5. Therefore it is necessarily true that an omniscient, omnipotent and perfectly good being exists.

6. Therefore, an omniscient, omnipotent and perfectly good being exists.

Struggling? Listen to WLC explain it here http://www.rfmedia.org/RF_audio_video/Defender_podcast/Defenders2_ExistenceofGod23.mp3

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Feeling confident? Here is a refutation of Plantinga's argument for you to consider. If you are really struggling with the material you should skip this.

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In this video I show why the Modal Ontological argument as proposed by Alvin Plantinga fails to prove that God exists.

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God is that which possesses all perfections

Existence is a perfection

Therefore God exists

Triangles are three sided shapes- their three-sidedness is essential to their being triangles. You cannot separate their three sidedness from their being triangles.

Similarly God has the essential property of being perfect. In order to be perfect God has to exist. He has the necessary property of existence. So God exists.

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Kant's Objection to the Ontological Argument