Idealism is a theory advocated by the philosopher George Berkely who arged for the rejection of matter. Berkeley believed that the reality was just a series of mental ideas, he explained it as Specific to be ia to be perceived there was nothing that existed in a physical world external to our minds. All of reality is just mental ideas that we perceive. That’s quite radical theory was led Berkeley into believing that. Firstly, Berkeley rejects he direct realist approach. This is that we directly perceive the external world how it is what we see and experience is that exactly the same in our minds as in the external world. Berkely instantly rejects this idea and uses John Lock’s primary and secondary quality distinction to support this rejection. If you recall John Locke used an indirect realist approach to reality by highlighting how many parts of reality exists in the mind and not in an external world. How can it be that what tastes sweet to one person may taste bitter to another or how can a hot hand feel water as cool but a cold hand can feel the same water as hot? If these properties existed in the physical form they would be consistent all the time, it seems these properties are in fact mind dependent and just exist as mental ideas.
