Bertrand Russell disagreed with Berkeleys argument for objects existence.

Idealism
George Berkeley was an Irish bishop and empiricist. His core philosophy was ‘esse est percipi’ this translates to, to be, is to be perceived. Berkeley believed that both primary and secondary objects were perceiver dependent believed that the world was not was not separate from the mind ergo; he was an immaterialist (we perceive things in the mind). He started his argument for empiricism by stating that in order for things to exist they must be perceived, due to holding this view point he thought that everything depends on the mind. This raises an immediate problem. If everything is perceiver dependent, what happens when an object is not being perceived? Does it simply pop out of existence? This argument does not seem coherent. This is due to the idea being an extremely irrational understanding of the world. The concept can also be disproved. This is because if we could put a video camera into a room and leave it so no one perceived the room and the objects in it and it would not disappear.
