| NOUMENON | In the philosophy of Kant, a thing that is incapable of being known, but only inferred from the nature of experience |
| PUERI | Natu minimi qui sacerdotibus concinunt |
| IDIOM | Expression whose meanings cannot be inferred from the meanings of the words that make it up (5) |
| UNCONTROLLABLE | Brutal colonel reckless around Norway is incapable of being restrained (14) |
| INFAMY | The state of being known for some bad quality or deed (6) |
| RECOGNITION | Acknowledgment, state of being known again (11) |
| KANTIAN | Follower of Kant |
| HEGEL | Contemporary of Kant |
| MONAD | Technical term for the number one or a single unit; or, in the philosophy of Leibniz, an elementary |
| DEMIURGE | Creator of the universe in the philosophy of Plato (8) |
| BARKERVILLEGOLDRUSH | The 1890s Klondike one centred in Dawson City is well known ...but what about this one in the Cariboo region of British Columbia in the 1860s?: 3 wds. |
| REID | Thomas -; a key figure in the philosophy of common sense (4) |
| CURATESEGG | A thing that is partly good and partly bad, a term originally from a cartoon in Punch (7,3) |
| EXISTENTIALIST | Person who believes in the philosophy of free will (14) |
| NEWZEALAND | Despite being known as a great Australian actor, Russell Crowe reaffirmed last month that he's only ever been a citizen of this country |
| ELLIPSIS | Omission of one or more words from a sentence that can be inferred from context (8) |
| OFFTHEHOOK | Out of danger, if the telephone is incapable of receiving calls (3,3,4) |
| COLANDER | Firm ground is fairly level and, being porous, is incapable of holding water (8) |
| ALLTOOWELL | Vladimir Putin was 2007's Person of the Year, despite his authoritarianism being known ___ around the world |
| UPANISHAD | Any of those Hindu sacred texts on which the philosophy of Vedanta is based; Sanskrit, 'sitting down near' (9) |