| 1879 | The Principles of Science |
| p.156 | p.22 | 8628 | I hold that algebra and number are developments of logic |
| Full Idea: I hold that algebra is a highly developed logic, and number but logical discrimination. | |||
| From: William S. Jevons (The Principles of Science [1879], p.156), quoted by Gottlob Frege - Grundlagen der Arithmetik (Foundations) §15 | |||
| A reaction: Thus Frege shows that logicism was an idea that was in the air before he started writing. Riemann's geometry and Boole's logic presumably had some influence here. |