7 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
5637 | Nowadays logic is seen as the science of extensions, not intensions [Scruton] |
5636 | Cartesian 'ideas' confuse concepts and propositions [Scruton] |
5660 | Allegiance is prior to the recognition of individual rights [Scruton] |
5653 | A right is a power which is enforced in the name of justice [Scruton] |
1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |