Combining Philosophers

All the ideas for Archimedes, Peter (Pyotr) Kropotkin and Hecato

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3 ideas

6. Mathematics / B. Foundations for Mathematics / 3. Axioms for Geometry

13007

Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz]

23. Ethics / C. Virtue Theory / 3. Virtues / a. Virtues

6004	The cardinal virtues are theoretical (based on knowledge), and others are 'non-theoretical' [Hecato, by Dorandi]

25. Social Practice / B. Equalities / 1. Grounds of equality

20486

Only liberty, equality and sympathy can stand up to anti-social people [Kropotkin]