9 ideas
19404 | Necessities rest on contradiction, and contingencies on sufficient reason [Leibniz] |
Full Idea: The principle of contradiction is the principle of necessity, and the principle that a sufficient reason must be given is the principle of contingency. | |
From: Gottfried Leibniz (On Sufficient Reason [1686], p.95) | |
A reaction: [this paragraph is actually undated] Contradictions occur in concrete actuality, as well as in theories and formal systems. If so, then there are necessities in nature. Are they discoverable a posteriori? Leibniz says not. |
5673 | If we have a pain, we are strongly aware of the bodily self [Cassam] |
Full Idea: Since sensations such as pain generally present themselves as in some part of one's body, the bodily self seems to be anything but elusive in sensory awareness. | |
From: Quassim Cassam (Introduction to 'Self-Knowledge' [1994], §I) | |
A reaction: This strikes me as a really good observation. Whenever we do Hume's experiment in introspection, we tend to examine either pure sense experiences or abstract ideas. If we introspect a pain, we actually find the body at the centre of activity. |
5670 | Knowledge of thoughts covers both their existence and their contents [Cassam] |
Full Idea: Our knowledge of our thoughts includes both our knowledge that we think and our knowledge of the contents of our thought. | |
From: Quassim Cassam (Introduction to 'Self-Knowledge' [1994], §I) | |
A reaction: This seems like a simple, self-evident and true distinction. We might question the first part, though. Knowledge involves the contents, but the fact that we think may be an inference from the contents, or even a fictional abstraction. Contents alone? |
5671 | Outer senses are as important as introspection in the acquisition of self-knowledge [Cassam] |
Full Idea: It would be quite legitimate to claim that the outer senses are at least as important as introspection in the acquisition of self-knowledge. | |
From: Quassim Cassam (Introduction to 'Self-Knowledge' [1994], §I) | |
A reaction: It is interesting to speculate about the extent to which a 'mind in a void' could have a personal identity. Experiences tend to be 'mine' because of my body, which has a history and a space-time location. But this doesn't make identity entirely cultural. |
5672 | Is there a mode of self-awareness that isn't perception, and could it give self-knowledge? [Cassam] |
Full Idea: The key questions are: can one be introspectively aware of oneself other than through an inner sense, and, if there is a non-perceptual mode of introspective self-awareness, can it be the ground or basis of one's self-knowledge? | |
From: Quassim Cassam (Introduction to 'Self-Knowledge' [1994], §I) | |
A reaction: Perception would involve a controlled attempt to experience a separate object. The other mode would presumably be more direct. The question boils down to 'is there an object which introspection can attempt to perceive?' Good question. |
5675 | Neither self-consciousness nor self-reference require self-knowledge [Cassam] |
Full Idea: According to Kant, self-consciousness does not require self-knowledge, and it also appears that self-reference does not require self-knowledge. | |
From: Quassim Cassam (Introduction to 'Self-Knowledge' [1994], §II) | |
A reaction: Kant's point is that knowledge requires a stage of conceptualisation, which simple self-consciousness might not involve. The second point is that self-reference require no knowledge because error is impossible. Two nice points, and useful distinctions. |
5674 | We can't introspect ourselves as objects, because that would involve possible error [Cassam] |
Full Idea: One can identify an object in a mirror as oneself, but that brings with it the possibility of misidentification, so since introspective awareness statements are immune to error, one is not introspectively aware of oneself as an object. | |
From: Quassim Cassam (Introduction to 'Self-Knowledge' [1994], §I) | |
A reaction: As a pure argument this looks weak. There could be two sorts of knowledge of objects, one admitting possible error, the other not. Introspecting pain appears to be awareness of oneself as an object. Planning my future needs my body. |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |
Full Idea: In singing and playing the lyre, a boy will be likely to reveal not only courage and moderation, but also justice. | |
From: Damon (fragments/reports [c.460 BCE], B4), quoted by (who?) - where? |
19403 | Each of the infinite possible worlds has its own laws, and the individuals contain those laws [Leibniz] |
Full Idea: As there are an infinity of possible worlds, there are also an infinity of laws, some proper to one, another to another, and each possible individual of any world contains in its own notion the laws of its world. | |
From: Gottfried Leibniz (On Sufficient Reason [1686], p.95) | |
A reaction: Hence Leibniz is not really a scientific essentialist, in that he doesn't think the laws arise out of the nature of the matter consituting the world. I wonder if the primitive matter of bodies which attaches to the monads is the same in each world? |