Combining Texts

Ideas for 'On 'Generation and Corruption'', 'A Puzzle Concerning Matter and Form' and 'Comments on a Certain Broadsheet'

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2 ideas

12. Knowledge Sources / A. A Priori Knowledge / 4. A Priori as Necessities

2602	What experience could prove 'If a=c and b=c then a=b'? [Descartes]
	Full Idea: Please tell me what the corporeal motion is that is capable of forming some common notion to the effect that 'things which are equal to a third thing are equal to each other'.
	From: René Descartes (Comments on a Certain Broadsheet [1644], p.366)

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / d. Secondary qualities

16721	Changes in secondary qualities are caused by changes in primary qualities [Giles of Orleans]
	Full Idea: Every alteration in secondary qualities is caused by some alteration made in the primary qualities.
	From: Giles of Orleans (On 'Generation and Corruption' [1270], I.6c)
	A reaction: Pasnau calls this the 'supervenience' thesis, here with the addition of causation. Was this doctrine retained by Locke and Boyle?