Combining Philosophers

All the ideas for William S. Jevons, Albertus Magnus and George Santayana

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6 ideas

1. Philosophy / C. History of Philosophy / 1. History of Philosophy

8000	He who is ignorant of the history of philosophy is doomed to repeat it [Santayana, by MacIntyre]

6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism

8628	I hold that algebra and number are developments of logic [Jevons]

7. Existence / A. Nature of Existence / 6. Criterion for Existence

18521

The criterion of existence is the possibility of action [Santayana]

9. Objects / C. Structure of Objects / 2. Hylomorphism / a. Hylomorphism

16756

Substantial forms must exist, to explain the stability of metals like silver and tin [Albertus Magnus]

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / c. Primary qualities

16718

Primary qualities are the cause of all the other sensible qualities [Albertus Magnus]

22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / e. Human nature

23060

The good is not relative, but is rooted in facts about human needs [Santayana]