| Author: | Descartes, René, 1596-1650 |
| Subject: | B, Philosophy |
| Format: | Text |
| Date issued: | 2003 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Selections from the Principles of Philosophy [electronic resource] / René Descartes |