| COGITOERGOSUM | Conclusion reached by Descartes (Latin) (6,4,3) |
| SIGMA | Conclusion reached by Aristophanes, Sophocles, and Euripides |
| INFERENCE | Conclusion reached by reasoning |
| OMEGA | Conclusion reached by thousand, say, in 21's borders |
| THINK | Unconvincing conclusion reached by weak judge (5) |
| ELICIT | Conclusion reached by judge on lawful extract (6) |
| USED | Exploited conclusions reached by you, as we did (4) |
| REBUT | Contradict conclusions reached by higher judge, nevertheless |
| BIBLE | Conclusions reached by idiot savant writ large in this |
| PREY | Conclusions reached by top lawyer influence jury for victim |
| NETT | After making deductions, conclusions reached by logician are about right |
| LEST | Conclusions reached by trial judge distress defendant in case |
| TEES | Conclusions reached by student despite the chaos in places on course (4) |
| ROPY | Conclusions reached by teacher, sadly, about work of poor quality (4) |
| AMI | Friend of Descartes ... or, in English, question pondered by Descartes? |
| MATE | Conclusion reached on board by a ship's officer |
| RAISONDETRE | Justification, as exemplified by Descartes' thinking? |
| TERRENE | Earthy expression used endlessly by Descartes for one |
| OPENER | Key work by Descartes perhaps rejected (6) |
| ITHINK | ___ therefore... (philosophical proposition by Descartes): 2 wds. |