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Thus, for Reid, common sense was based on the innate capacity of man in an earlier epoch to directly participate in nature, and one we find to some extent in the child and artist, but one that from a philosophical and scientific perspective, we must re-awaken at a higher level in the human mind above nature. Why does Reid believe that perception is the way to recognize? Well, to him "an experience is purely subjective and purely negative. It supports the validity of a proposition, only on the fact that I find that it is impossible for me not to hold it for true, to suppose it therefore not true" (Reid, 753). To understand this better, it is important to know that Reid divides his definition of perception into two categories: conception, and belief. "Conception is Reid's way of saying to visualize an object, so then we can affirm or deny qualities about that thing. Reid believes that beliefs are our direct thoughts of an object, and what that object is" (Buras, The Functions of Sensations to Reid). So, to Reid, what we see, what we visualize, what we believe of an object, is that object's true reality. Reid believes in direct objectivity, our senses guide us to what is right since we cannot trust our own thoughts. "The worlds of common sense and of philosophy are reciprocally the converse of each other" (Reid, 841). Reid believes that Philosophy overcomplicates the question of what is real. So, what does Common Sense actually mean then? Well, "common sense is the senses being pulled all together to form one idea" (Cambridge Companion to Thomas Reid, 164). Common sense (all the senses combined) is how we truly identify the reality of an object; since all that can be perceived about an object, are all pulled into one perception. How do people reach the point of accessing common sense? That's the trick, everyone is born with the ability to access common sense, that is why it is called common sense. "The principles of common sense are common to all of humanity," (Nichols, Ryan, Yaffe, and Gideon, Thomas Reid).