Combining Texts

All the ideas for 'Essays on Intellectual Powers: Abstraction', 'Open Society and Its Enemies:Hegel and Marx' and 'Fourfold Root of Princ of Sufficient Reason'

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15 ideas

2. Reason / B. Laws of Thought / 2. Sufficient Reason
21918 Sufficient Reason can't be proved, because all proof presupposes it [Schopenhauer, by Lewis,PB]
7. Existence / E. Categories / 1. Categories
21920 No need for a priori categories, since sufficient reason shows the interrelations [Schopenhauer, by Lewis,PB]
8. Modes of Existence / D. Universals / 5. Universals as Concepts
23651 Universals are not objects of sense and cannot be imagined - but can be conceived [Reid]
8. Modes of Existence / E. Nominalism / 1. Nominalism / b. Nominalism about universals
23650 Only individuals exist [Reid]
8. Modes of Existence / E. Nominalism / 2. Resemblance Nominalism
23649 No one thinks two sheets possess a single whiteness, but all agree they are both white [Reid]
9. Objects / D. Essence of Objects / 15. Against Essentialism
5451 Popper felt that ancient essentialism was a bar to progress [Popper, by Mautner]
9. Objects / F. Identity among Objects / 1. Concept of Identity
11874 Real identity admits of no degrees [Reid]
10. Modality / A. Necessity / 3. Types of Necessity
21362 Necessity is physical, logical, mathematical or moral [Schopenhauer, by Janaway]
11. Knowledge Aims / C. Knowing Reality / 3. Idealism / a. Idealism
21361 For Schopenhauer, material things would not exist without the mind [Schopenhauer, by Janaway]
11. Knowledge Aims / C. Knowing Reality / 3. Idealism / b. Transcendental idealism
21919 Object for a subject and representation are the same thing [Schopenhauer]
14. Science / D. Explanation / 2. Types of Explanation / a. Types of explanation
21917 The four explanations: objects by causes, concepts by ground, maths by spacetime, ethics by motive [Schopenhauer, by Lewis,PB]
18. Thought / A. Modes of Thought / 1. Thought
23652 We must first conceive things before we can consider them [Reid]
18. Thought / D. Concepts / 2. Origin of Concepts / b. Empirical concepts
21921 Concepts are abstracted from perceptions [Schopenhauer, by Lewis,PB]
18. Thought / E. Abstraction / 1. Abstract Thought
23648 First we notice and name attributes ('abstracting'); then we notice that subjects share them ('generalising') [Reid]
20. Action / C. Motives for Action / 3. Acting on Reason / c. Reasons as causes
21363 Motivation is causality seen from within [Schopenhauer]