Hume's 'copy thesis' claims that..

H4. Hume's Microscope
Given Hume's theory of ideas as copies of impressions, what isthe obvious way or method to eliminate the obscurity and ambiguity of ideasin the moral sciences? What does Hume take definition to be? Why does definition serve to clarify and disambiguate only complex ideas? How, then, does one clarify and disambiguate simple ideas that are obscureor ambiguous? To what is Hume referring when he speaks of a new microscopeor species of optics, by which, in the moral sciences, the most minute,and most simple ideas may be so enlarged as to fall readily under our apprehension? To which idea, as a test case of philosophical analysis, does Hume applyhis new microscope? Why did he choose to investigate this particularidea? Why does he look for the impression of which this idea is supposedlya copy, rather than define it by enumerating its component simple ideas?

David Hume's theory of religion. (Book, 1970) …

need no essay scholarships now David Hume Dissertation Passions topic thesis ..

Philosopher David Hume on the Origin of Ideas Summary

Hume Revisited
A brief review
Transcendental proof and the mistake strategy
A problem with Kant's transcendental proof and mistake strategy
The implications of this problem
Turning the copy thesis on its head
Problem: Drawing the distinction between a beginning of existence and a cause of existence
Final Status of Kant's Answer to Hume
Conclusion
On the Guide(s) to the Discovery of the Route to the Principle of Causation

The house, the ship, and irreversibility
The nature of the principle of the Second Analogy
Synthetic and Constitutive versus regulative
Objects of representations
Object of Experience Strategies
Bibliography
Index

The Philosophy of David Hume: ..

HUME
David O'farrill, Carolina Zepeda & Diana Castro
Plato:
Innate Ideas- Knowledge and ideas we all have as forms, ideas, before taking the material form.

Hume claims that he can analyze any idea into simpleideas all of which originated in the mind by copying impressions actuallyexperienced.

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Hume presents the Copy Principle as an empirical thesis. He emphasizes this point by offering, in both the Treatise and the first Enquiry, as an empirical counterexample to the principle, "one contradictory phenomenon" (T, 5-6; EHU, 20-21) -- the infamous missing shade of blue. Hume asks us to consider "a person to have enjoyed his sight for thirty years, and to have become perfectly well acquainted with colours of all kinds, excepting one particular shade of blue..."(T, 6). Then

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Although we permute and combine ideas in imagination to form complexideas of things we haven't experienced, our creative powersextend no farther than "the materials afforded us by the senses andexperience." Complex ideas are composed of simpleideas, which are fainter copies of the simple impressions fromwhich they are ultimately derived, to which they correspond andexactly resemble. Hume offers this "general proposition" as his "firstprinciple...in the science of human nature" (T, 7). Usually called the "Copy Principle," Hume's distinctive brand of empiricism is often identified with his commitment to it.

Faculty of Philosophy - University of Cambridge

[...]
But though our thought seems to possess this unbounded liberty, we shall find, upon a nearer examination, that it is really
confined within very narrow limits
, and that all this creative power of the mind amounts to no more than the faculty of
compounding
,
transposing
,
augmenting
, or
diminishing
the materials afforded us by the senses and experience"
Limited power of the mind
"[A]ll the materials of thinking are derived either from our outward or inward sentiment: the mixture and composition of these belongs alone to the mind and will"
Evidence
Compound ideas resolve themselves into simple ideas, which in turn were copied from an impression
If we lack the ability to have the sensation, we lack the corresponding idea
"A man of mild manners can form no idea of inveterate revenge or cruelty"

The missing shade of blue
Is this meant as an attack on Hume's copy principle or in defense of it?