Ideas of Jean Buridan, by Theme

[French, 1298 - 1360, Probably born at Bethune, France.]

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2. Reason / A. Nature of Reason / 9. Limits of Reason

1403	A rational donkey would starve to death between two totally identical piles of hay [PG]

9. Objects / C. Structure of Objects / 4. Quantity of an Object

16678

Without magnitude a thing would retain its parts, but they would have no location

9. Objects / E. Objects over Time / 8. Continuity of Rivers

16793

A thing is (less properly) the same over time if each part is succeeded by another

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / b. Primary/secondary

16726

Why can't we deduce secondary qualities from primary ones, if they cause them?

14. Science / A. Basis of Science / 2. Demonstration

16577

Induction is not demonstration, because not all of the instances can be observed

14. Science / C. Induction / 2. Aims of Induction

16576

Science is based on induction, for general truths about fire, rhubarb and magnets