"esse est percipi" ("to be is to be perceived")
"esse est percipi" – "to be is to be perceived"
This is the central statement of George Berkeley’s idealism.
Would the universe exist if there were no minds to perceive its existence?
I will take George Berkeley’s stance that the universe could not exist without minds to perceive its existence.
Here is a reason why I take this stance: What size would the universe be if there were no minds to perceive its existence? Here is the answer: It would not be any size, because the notion of size comes from a perceiving mind. Since the universe without minds to perceive it would not be any particular size, it therefore would not exist i.e. it would possess no size.
Everything that we know about the universe is relative to our minds. So without our minds, everything we know the universe to be would not exist.
Therefore Berkeley’s idealism is true, and the opposing positions of naturalism and physicalism are false. Naturalism and physicalism are irrational.