That we have first rais'd a Dust, and then complain, we cannot see. - George Berkeley

Since therefore, as well those degrees of heat that are not painful, as those that are, can exist in a thinking substance; may we not conclude that external bodies are absolutely incapable of any degree of heat whatsoever?

That neither our Thoughts, nor Passions, nor Ideas formed by the Imagination, exist without the Mind, is what every Body will allow. And it seems no less evident that the various Sensations or Ideas imprinted on the Sense... cannot exist otherwise than in a Mind perceiving them... For as to what is said of the absolute Existence of unthinking Things without any relation to their being perceived, that seems perfectly unintelligible. Their Esse is Percipi, nor is it possible they should have any Existence, out of the Minds or thinking Things which perceive them.

In the pursuit of truth we must beware of being misled by terms which we do not rightly understand. That is the chief point. Almost all philosophers utter the caution; few observe it.