Combining Texts

All the ideas for '67: Platonic Questions', 'Syntagma' and 'The Strangest Man'

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8 ideas

8. Modes of Existence / B. Properties / 8. Properties as Modes

16730	If matter is entirely atoms, anything else we notice in it can only be modes [Gassendi]
	Full Idea: Since these atoms are the whole of the corporeal matter or substance that exists in bodies, if we conceive or notice anything else to exist in these bodies, that is not a substance but only some kind of mode of the substance.
	From: Pierre Gassendi (Syntagma [1658], II.1.6.1), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 22.4
	A reaction: If the atoms have a few qualities of their own, are they just modes? If they are genuine powers, then there can be emergent powers, which are rather more than mere 'modes'.

14. Science / D. Explanation / 2. Types of Explanation / j. Explanations by reduction

16619	We observe qualities, and use 'induction' to refer to the substances lying under them [Gassendi]
	Full Idea: Nothing beyond qualities is perceived by the senses. …When we refer to the substance in which the qualities inhere, we do this through induction, by which we reason that some subject lies under the quality.
	From: Pierre Gassendi (Syntagma [1658], II.1.6.1), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 07.1
	A reaction: He talks of 'induction' (in an older usage), but he seems to mean abduction, since he never makes any observations of the substances being proposed.

15. Nature of Minds / A. Nature of Mind / 2. Psuche

5960	When the soul is intelligent and harmonious, it is part of god and derives from god [Plutarch]
	Full Idea: The soul, when it has partaken of intelligence and reason and concord, is not merely a work but also a part of god and has come to be not by his agency but both from him as source and out of his substance.
	From: Plutarch (67: Platonic Questions [c.85], II.1001)
	A reaction: A most intriguing shift of view from earlier concepts of the psuché. How did this come about? This man is a pagan. The history is in the evolution of Platonism. See 'The Middle Platonists' by John Dillon. Davidson is also very impressed by reason.

26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / g. Atomism

16593	Atoms are not points, but hard indivisible things, which no force in nature can divide [Gassendi]
	Full Idea: The vulgar think atoms lack parts and are free of all magnitude, and hence nothing other than a mathematical point, but it is something solid and hard and compact, as to leave no room for division, separation and cutting. No force in nature can divide it.
	From: Pierre Gassendi (Syntagma [1658], II.1.3.5), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 03.2
	A reaction: If you gloatingly think the atom has now been split, ask whether electrons and quarks now fit his description. Pasnau notes that though atoms are indivisible, they are not incorruptible, and could go out of existence, or be squashed.

16729	How do mere atoms produce qualities like colour, flavour and odour? [Gassendi]
	Full Idea: If the only material principles of things are atoms, having only size, shape, and weight, or motion, then why are so many additional qualities created and existing within the things: color, heat, flavor, odor, and innumerable others?
	From: Pierre Gassendi (Syntagma [1658], II.1.5.7), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 22.4
	A reaction: This is pretty much the 'hard question' about the mind-body relation. Bacon said that heat was just motion of matter. I would say that this problem is gradually being solved in my lifetime.

27. Natural Reality / A. Classical Physics / 1. Mechanics / d. Gravity

21236	Instead of gravitational force, we now have a pervasive gravitational field [Farmelo]
	Full Idea: Physics replaced the notion that bodies exert gravitational force on each other by the more effective picture that the bodies in the universe give rise to a pervasive gravitational field which exerts a force on each particle.
	From: Graham Farmelo (The Strangest Man [2009], 08)
	A reaction: This still uses the word 'force'. I sometimes get the impression that gravity is the curvature of space, but gravity needs more. Which direction along the curvature are particles attracted? The bottom line is the power of the bodies.

27. Natural Reality / B. Modern Physics / 2. Electrodynamics / d. Quantum mechanics

21235	The Schrödinger waves are just the maths of transforming energy values to positions [Farmelo]
	Full Idea: Dirac showed that the Schrödinger waves were simply the mathematical quantities involved in transforming the description of a quantum based on its energy values to one based on possible values of its position.
	From: Graham Farmelo (The Strangest Man [2009], 08)
	A reaction: Does this eliminate actual physical 'waves' from the theory?

27. Natural Reality / B. Modern Physics / 4. Standard Model / c. Particle properties

21234	Experiments show that fundamental particles of one type are identical [Farmelo]
	Full Idea: It is an established experimental fact ...that every single fundamental particle in the universe is the same and identical to all other particles of the same type.
	From: Graham Farmelo (The Strangest Man [2009], 07)
	A reaction: A loud groan is heard from the tomb of Leibniz. I'm unclear how experiments can establish this. If electrons have internal structure (which is not ruled out) then uniformity is highly unlikely.