Berkeley's argument for the existence of God

[vulcanlogician]

The thing is Khem, ideas are sometimes blue. Nothing in the material world is. This at least says something of a distinction between ideas and material things. There are qualities that only pertain to ideas and not physical matter. That's the starting point for the argument anyway.... Your going to make me dig out Hylas and Philonous here.

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Let's stick with color then. Outside of the mind there is no such thing as "blue". There are light waves. We can measure the wavelength of the light (in the same way we can measure temperature) and say "that is what the mind interprets as blue" but blueness exists only as an idea.

Other animals perceive what humans call blue. So there is such a thing as blue. Don't discount third person/entity perspective.

There is a third person way to observe blue... it's called wavelength and it is a material objective thing... and guess what? It's not blue. Blue is in the eye of the beholder and nowhere else.