Category: complex ideas


We saw how Hume, writing some 60 years later, builds on Locke’s empiricist foundations and develops many of his views. Hume also rejects innate ideas and believes that all our thoughts are given through the senses.


Hume believes that;

we can divide the mind’s perceptions into two classes, on the basis of their different degrees of force and liveliness. The less forcible and lively are commonly called ‘thoughts’ or ideas’.

For Hume, these ideas are pale copies of the more direct and immediate perceptions we have when we are actually experiencing something rather than thinking about it. He calls these more direct perceptions ‘impressions’, and explains that he uses this term to mean, ‘all our more lively perceptions when we hear or see or feel or love or hate or desire or will.’


So Hume thinks that ideas are got from the way we experience the world physically, emotionally and intellectually (although I’m not sure if he would approve of those divisions of our experience) but that all our ideas are fainter perceptions of … our impressions.’ As he puts it, ‘all our ideas or more feeble perceptions are copies of our impressions or more lively ones.’




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Locke goes on to distinguish between simpleandcomplexideas.
In Book 2, Ch 12, he says that the mind ‘exerts its power’ on simple ideas in 3 ways:
 
(1)  Combining several simple ideas into one compound one; that is how all complex ideas are made.


(2)  Bringing together two ideas, whether simple or complex, setting them side by side so as to see them both at once, without uniting them into one; this is how the mind gets all its ideas of relations.
 
(3)  Separating them from all other ideas that accompany them in their real existence; this is  called abstraction, and it is how all the mind’s general ideas are made.


He goes on to tell us that:

Ideas thus made up of several simple ones I call complex. Examples are ·the ideas of· beauty, gratitude,  a man, an army, the universe.’


So, to make complex ideas we take simple ideas and mix them, put them side by side, or try to see them in isolation from other simple ideas that they may be muddled and confused with. 

Easy!