| Answer | Crossword Clue |
|---|---|
| RENE | Descartes who wrote "Cogito ergo sum" |
| RENE | Descartes who wrote "Cogito, ergo sum" |
| SUM | "Cogito ergo ...": Descartes |
| SUM | "Cogito, ergo ...": Descartes |
| DESCARTES | "Cogito ergo sum" source |
| RENE | Cogito ergo sum sayer |
| DESCARTES | "Cogito ergo sum" philosopher |
| IAM | Part of "Cogito, ergo sum" |
| IAM | Sum in cogito ergo sum |
| DESCARTES | His motto: Cogito, ergo sum. |
| IAM | The "sum" in "Cogito, ergo sum" |
