| 4973 | As I understand it, a concept is the meaning of a grammatical predicate [Frege] |
| 8651 | A concept is a possible predicate of a singular judgement [Frege] |
| 11104 | Concepts are language [Quine] |
| 4882 | Concepts are things we (unlike dogs) can think about, because we have language [Dennett] |
| 18589 | For behaviourists concepts are dispositions to link category members to names [Machery] |