3 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
18671 | The ground for an attitude is not a thing's 'goodness', but its concrete characteristics [Ewing] |
19384 | Space and time are the order of all possibilities, and don't just relate to what is actual [Leibniz] |