5 ideas
9463 | Classical logic is bivalent, has excluded middle, and only quantifies over existent objects [Jacquette] |
Full Idea: Classical logic (of Whitehead, Russell, Gödel, Church) is a two-valued system of propositional and predicate logic, in which all propositions are exclusively true or false, and quantification and predication are over existent objects only. | |
From: Dale Jacquette (Intro to I: Classical Logic [2002], p.9) | |
A reaction: All of these get challenged at some point, though the existence requirement is the one I find dubious. |
335 | Do the gods also hold different opinions about what is right and honourable? [Plato] |
Full Idea: Do the gods too hold different opinions about what is right, and similarly about what is honourable and dishonourable, good and bad? | |
From: Plato (Euthyphro [c.398 BCE], 07e) |
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? |
336 | Is what is pious loved by the gods because it is pious, or is it pious because they love it? (the 'Euthyphro Question') [Plato] |
Full Idea: Is what is pious loved by the gods because it is pious, or is it pious because they love it? | |
From: Plato (Euthyphro [c.398 BCE], 10a) | |
A reaction: The famous Euthyphro Question, the key question about the supposed religious basis of morality. The answer of Socrates is Idea 337. |
337 | It seems that the gods love things because they are pious, rather than making them pious by loving them [Plato] |
Full Idea: So things are loved by the gods because they are pious, and not pious because they are loved? It seems so. | |
From: Plato (Euthyphro [c.398 BCE], 10e) | |
A reaction: Socrates' answer to the Euthyphro Question (see Idea 336). The form of piety precedes the gods. |