Combining Philosophers

Ideas for Charles Sanders Peirce, Robert Kirk and Ren Descartes

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27 ideas

12. Knowledge Sources / A. A Priori Knowledge / 2. Self-Evidence
24025 Clear and distinct truths must be known all at once (unlike deductions) [Descartes]
12. Knowledge Sources / A. A Priori Knowledge / 3. Innate Knowledge / a. Innate knowledge
14774 Innate truths are very uncertain and full of error, so they certainly have exceptions [Peirce]
24022 Our souls possess divine seeds of knowledge, which can bear spontaneous fruit [Descartes]
3630 Our thinking about external things doesn't disprove the existence of innate ideas [Descartes]
12. Knowledge Sources / A. A Priori Knowledge / 4. A Priori as Necessities
2279 A triangle has a separate non-invented nature, shown by my ability to prove facts about it [Descartes]
2602 What experience could prove 'If a=c and b=c then a=b'? [Descartes]
5012 'Nothing comes from nothing' is an eternal truth found within the mind [Descartes]
12. Knowledge Sources / A. A Priori Knowledge / 6. A Priori from Reason
3617 I aim to find the principles and causes of everything, using the seeds within my mind [Descartes]
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / c. Primary qualities
6490 For Descartes, objects have one primary quality, which is geometrical [Descartes, by Robinson,H]
12. Knowledge Sources / B. Perception / 2. Qualities in Perception / d. Secondary qualities
22593 Our sensation of light may not be the same as what produces the sensation [Descartes]
12. Knowledge Sources / B. Perception / 3. Representation
7400 Descartes said images can refer to objects without resembling them (as words do) [Descartes, by Tuck]
12. Knowledge Sources / B. Perception / 5. Interpretation
2295 Why does pain make us sad? [Descartes]
12. Knowledge Sources / C. Rationalism / 1. Rationalism
3627 Dogs can make the same judgements as us about variable things [Gassendi on Descartes]
2265 We perceive objects by intellect, not by senses or imagination [Descartes]
3611 Understanding, rather than imagination or senses, gives knowledge [Descartes]
2263 The wax is not perceived by the senses, but by the mind alone [Descartes]
2264 We don't 'see' men in heavy clothes, we judge them to be men [Descartes]
12. Knowledge Sources / D. Empiricism / 1. Empiricism
14789 Experience is indeed our only source of knowledge, provided we include inner experience [Peirce]
12. Knowledge Sources / D. Empiricism / 2. Associationism
19253 We talk of 'association by resemblance' but that is wrong: the association constitutes the resemblance [Peirce]
14765 Association of ideas is the best philosophical idea of the prescientific age [Peirce]
12. Knowledge Sources / D. Empiricism / 3. Pragmatism
14794 Instead of seeking Truth, we should seek belief that is beyond doubt [Peirce]
14795 Pragmatism is a way of establishing meanings, not a theory of metaphysics or a set of truths [Peirce]
12. Knowledge Sources / D. Empiricism / 5. Empiricism Critique
14785 The world is one of experience, but experiences are always located among our ideas [Peirce]
24034 If someone had only seen the basic colours, they could deduce the others from resemblance [Descartes]
12. Knowledge Sources / E. Direct Knowledge / 3. Inspiration
14772 If we decide an idea is inspired, we still can't be sure we have got the idea right [Peirce]
14771 Only reason can establish whether some deliverance of revelation really is inspired [Peirce]
14773 A truth is hard for us to understand if it rests on nothing but inspiration [Peirce]