1. Materialism
However it is clear to Locke that colour, temperature etc are merely a result of the interaction of particles (and their primary qualities) with our sense organs. ... Berkeley also argues that to suppose that objects exist without the mind "is to suppose, without any reason at all, that God has created innumerable beings that are entirely useless, and serve to no manner of purpose."" ... This seems particularly obvious when Berkeleys problematic alternative is examined, i.e. that the relevant causal relationship is actually between God and our ideas. ...