Beginning of Essay
Can One Perceive Or Confirm The Existence Of An Idea Or Object That Is External "I think therefore I am." Man wills, refuses, perceives, understands, and denies many principles. As explained by Rene' Descartes, man is a thinking thing, a conscious being who truth ....

Middle of Essay
.... and effect theory. More importantly, is the logic that lies behind the actual theory. The rationale that an object will have an effect is only if it stems from a legitimate cause. A stone, for example, cannot be perceived accurately if there isn't an initial idea preceding with equal or superior properties in one's intellect. The mind generates ideas and develops reality through previous schema or beliefs as Descartes states: "And although an idea may give rise to another idea, this regress cannot, nevertheless, be infinite;we must in the end reach a first idea, the cause of which is, as it were, the ....