33 ideas
| 19066 | Philosophy aims to understand the world, through ordinary experience and science [Dummett] |
| 3972 | Truth and objectivity depend on a community of speakers to interpret what they mean [Davidson] |
| 3969 | There are no ultimate standards of rationality, since we only assess others by our own standard [Davidson] |
| 2661 | Dialectic is speech cast in the form of logical argument [Cicero] |
| 19067 | A successful proof requires recognition of truth at every step [Dummett] |
| 2673 | There cannot be more than one truth [Cicero] |
| 19060 | Truth-tables are dubious in some cases, and may be a bad way to explain connective meaning [Dummett] |
| 11066 | Deduction is justified by the semantics of its metalanguage [Dummett, by Hanna] |
| 19058 | Syntactic consequence is positive, for validity; semantic version is negative, with counterexamples [Dummett] |
| 2669 | Dialectic assumes that all statements are either true or false, but self-referential paradoxes are a big problem [Cicero] |
| 19063 | Beth trees show semantics for intuitionistic logic, in terms of how truth has been established [Dummett] |
| 19059 | In standard views you could replace 'true' and 'false' with mere 0 and 1 [Dummett] |
| 19062 | Classical two-valued semantics implies that meaning is grasped through truth-conditions [Dummett] |
| 19065 | Soundness and completeness proofs test the theory of meaning, rather than the logic theory [Dummett] |
| 2664 | If we have complete healthy senses, what more could the gods give us? [Cicero] |
| 2665 | How can there be a memory of what is false? [Cicero] |
| 20800 | Every true presentation can have a false one of the same quality [Cicero] |
| 19061 | An explanation is often a deduction, but that may well beg the question [Dummett] |
| 3960 | There are no such things as minds, but people have mental properties [Davidson] |
| 3964 | If the mind is an anomaly, this makes reduction of the mental to the physical impossible [Davidson] |
| 3965 | Mental entities do not add to the physical furniture of the world [Davidson] |
| 3961 | Obviously all mental events are causally related to physical events [Davidson] |
| 3963 | There are no strict psychophysical laws connecting mental and physical events [Davidson] |
| 3966 | The correct conclusion is ontological monism combined with conceptual dualism [Davidson] |
| 3967 | Absence of all rationality would be absence of thought [Davidson] |
| 3974 | Our meanings are partly fixed by events of which we may be ignorant [Davidson] |
| 19064 | Holism is not a theory of meaning; it is the denial that a theory of meaning is possible [Dummett] |
| 3968 | Propositions explain nothing without an explanation of how sentences manage to name them [Davidson] |
| 3970 | Thought is only fully developed if we communicate with others [Davidson] |
| 3971 | There is simply no alternative to the 'principle of charity' in interpreting what others do [Davidson] |
| 2672 | Virtues must be very detached, to avoid being motivated by pleasure [Cicero] |
| 3973 | Without a teacher, the concept of 'getting things right or wrong' is meaningless [Davidson] |
| 3962 | Cause and effect relations between events must follow strict laws [Davidson] |