PSYC 3140 Lecture Notes - Lecture 23: Logical Truth, Lightning
9 May 2018
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PSYC 3140
Lecture 23
a. Impressions and Ideas Philosophy
i. Empirical - The Contents of the mind come only from experience
which could be stimulated by either external or internal events. Once
in the mind, ideas can be rearranged at will. Therefore, we can
ponder thoughts that do not necessarily correspond to reality.
1. Hume did not deny the existence of physical reality; he denied
only the possibility of knowing it directly.
2. According to Hume, nothing could be known with certainty
because all knowledge was based on the interpretation of
subjective experience.
ii. Moral Philosophy referred roughly to what we now call the social
sciences
iii. All the perceptions of the human mind resolve themselves into two
distinct kinds:
1. Impressions: Strong, vivid perceptions
2. Ideas: Weak perceptions and faint images in thinking &
reasoning
iv. Simple ideas were once impressions which are correspondent to
them, and which they exactly represent. Simple ideas cannot be
broken down further (like Locke)
v. Complex ideas made up of other ideas not all complex ideas
necessarily correspond to complex impressions.
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