| Clue | Source | Date |
|---|---|---|
| German existentialist philosopher | ||
| Martin --, German philosopher (1889-1976) | The Telegraph General Knowledge | 22 Jun 2020 |
| Freudian concept, as espoused by fellow German philosopher | ||
| According to Monty Python, Martin ____ could “think you under the table” | The Times Specialist Sunday | 28 Oct 2018 |