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Ideas for 'Logic (Port-Royal Art of Thinking)', 'Summa Contra Gentiles' and 'Grundlagen der Arithmetik (Foundations)'

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3 ideas

14. Science / C. Induction / 1. Induction

8624	Induction is merely psychological, with a principle that it can actually establish laws [Frege]

8626	In science one observation can create high probability, while a thousand might prove nothing [Frege]

14. Science / D. Explanation / 2. Types of Explanation / k. Explanations by essence

16784

Forms make things distinct and explain the properties, by pure form, or arrangement of parts [Arnauld,A/Nicole,P]