Empiricism
All of our substantial knowledge and all of our concepts come from experience.
Concept empiricism
All concepts come from experience (all “ideas” are ultimately caused by “impressions”)
Hume distinguishes between “impressions” (i.e. experiences) and “ideas (i,e concepts)
Impressions are more “vivid and forceful” than concepts/ideas, according to Hume
Concepts/ideas are faint “copies” of impressions
Impressions cause ideas (not vice versa)
Ideas/concepts can be split into two types:
-simple concepts (can’t be analysed into other concepts; must each be caused by a simple impression)
-complex concepts (ultimately made up of simple concepts; need not be directly caused by experience)
We have no innate concepts; our minds are a ‘tabula rasa’ (a blank slate).
Knowledge empiricism
All knowledge is either a posteriori or just analytic (a priori)
We have no innate knowledge; our minds are a ‘tabula rasa’ (a blank slate)
Tabula rasa
Blank slate
The mind as a tabula rasa
There’s no innate concepts and no innate truths/knowledge.
Impressions
include sensations [like pain] as well as desires, passions, and emotions.
Ideas
the faint images of impressions in thinking and reasoning. It is the difference between feeling the pain of your present sunburn and recalling last year’s sunburn
Impressions of sensation
the feelings we get from our five senses as well as pains and pleasures, all of which arise in us “originally, from unknown causes
Impressions of reflection
Desires, emotions, passions, and sentiments.
They are essentially reactions or responses to ideas, which is why he calls them secondary.
Your memories of last year’s sunburn are ideas, copies of the original impressions you had when the sunburn occurred.
Recalling those ideas causes you to fear that you’ll get another sunburn this year, to hope that you won’t, and to want to take proper precautions to avoid overexposure to the sun.
Complex impressions
made up of a group of simple impressions
Simple impressions
can’t be broken down further because they have no component parts
Copy principle
all simple ideas are caused by simple impressions. You can’t have a simple idea without the corresponding impression.
How do we get complex ideas?
(i) copies of complex impressions
(ii) composed of simpler ideas that, in the end, are copies of impressions
Hume’s fork
relations of ideas and matters of fact
relations of ideas
A Priori, analytic, necessary
matters of fact
A Posteriori, synthetic, contingent
The triviality of reason
All a priori knowledge is analytic and so is trivial. Its truth is independent of how reality is. It tells us nothing about reality. It is just about the meanings of concepts
Importance of experience
All our substantial synthetic knowledge is a posteriori. Knowing about reality requires experience of it.