No matter how unhappy you might have been about the radical empiricist claims and how uncomfortable you might feel by reduction of human understanding to empiricism alone, let’s keep those discussions for a later time. For the time being let’s honestly and impartially try to understand what Empiricism is. When we think about Empiricism we think about three major names in the history of metaphysics they are John Locke, Joseph Berkley and David Hume. In order to understand what are the basics of this subject are, perhaps a good way is to visit the original work of these philosophers and try to understand what they are trying to tell us. For example in David Hume’s ‘An enquiry concerning human understanding’ Hume himself lays the foundations of the subject of empiricism stone by stone gradually by introducing us to his own understanding of the subject. What Hume is saying is simple. Hume considers us the human beings as thinking and rational beings. If we are thinking then we are having ideas and thoughts. Hume however invites us to use a third term too with regards to our similar abilities that he calls Impressions. Impressions is used by Hume in his own unique meanings. So where do we get thoughts, ideas and impressions from??? Hume tells us that although thoughts and ideas have no boundaries but on close inspection we can safely conclude that they are driven eventually from our senses and experiences. We use transposing, compounding, augmenting or diminishing the material afforded by our senses and experiences to generate something new. For example if we join the gold and mountain we can imagine a golden mountain. Whilst gold and mountain are both available to our senses already. So as per Hume in simple terms whatever doesn’t exist in experience or cannot be perceived by senses cannot really exist in thoughts, ideas or impressions. Origin of ideas lie in perception through senses and experience………