A Treatise is a work of philosophy by George Berkeley, an Irish Empiricist. The work was published in 1710, and was an addition as well as refute to the philosophy of John Locke. In it, Berkeley argues that the outside world (the material world) is not made up of object, but of ideas. Because people are not able to come up with completely independent ideas, the world must be made up of ideas that portray themselves as material objects. John Locke had different theories about human perception, saying that ideas were the agreement or disagreement of two other ideas.
Born in 1685, George Berkeley was an Irish Empiricist, meaning he though knowledge could only come from sensory input (we are born with none). The most revolutionary of his ideas was the thought that all things in the world are ideas - immaterialism. Take a chair, for example. Without someone to perceive or view it, it would not exist, therefore it is only an idea. Berkeley inspired the views of Mach and Einstein, and passed away in 1753.
