This video draws from excerpts from Berkeley's Three Dialogues.It lays out some of his main reasons for Idealism."Idealism" is the philosophical position that material substance or material objects do not exist.Objects exist; they are just not material.Instead, what exists are perceptions and minds-not matter.What may come as a surprise is that his principle motivation for Idealism is Empiricism."Empiricism" is the claim that all knowledge is derived from experience.