According to WWW.philosophypages.com/philosophydictionary, knowledge is simply defined as, "Justified true belief". One of the definitions for knowledge in Webster's New World College Dictionary states, "All that has been perceived or grasped by the mind; learning; enlightenment". This last definition of knowledge is along the same lines of what I will be discussing. David Hume did not believe a person could merely know something, but that a person could only have knowledge of something if he/she had experienced it through their senses. David Hume was an empiricist, and he believed knowledge came to a person exclusively through experience. Hume accepted, as did Locke and Berkeley, that the object of knowledge is solely the impressions perceived by each person. He did not, however, allow himself to make any concession to classical philosophy, as Locke had done with the principle of causality and the existence of substance; or as Berkeley had done with religious principles, which led him to admit the existence of spiritual substance. Instead, Hume developed an extreme empiricist principle where he argues that impressions (vivid perceptions) alone are the real objects of knowledge. In his search for knowledge, Hume decided that "impressions" and "ideas" make up the total content of the mind. He suggested that we gain knowledge through the experiences we obtain through our senses. He believed, when we are born we have no knowledge about anything, we only "learn" what we know through experience. For Hume, all knowledge originates with experience, and all experience is dependent on one's own perceptions of that
             experience. We have direct knowledge only of perceptions, not of what the perceptions are of (if, indeed, they may be counted as of anything). Hume states, "All the perceptions of the human mind resolv...