Jakob Friedrich Fries
| Jakob Friedrich Fries | |
|---|---|
| Born | 23 August 1773 | 
| Died | 10 August 1843 (aged 69) | 
| Children | Hugo Friedrich Fries | 
| Relatives | 
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| Education | |
| Alma mater | University of Leipzig University of Jena | 
| Philosophical work | |
| Era | 19th-century philosophy | 
| Region | Western philosophy | 
| School | Post-Kantianism | 
| Institutions | University of Jena | 
| Main interests | Metaphysics Psychology Philosophy of science Philosophical logic | 
| Notable ideas | Empirical psychology as the basis of critical and transcendental philosophy Fries's trilemma | 
Jakob Friedrich Fries (/friːz/; German: [fʁiːs]; 23 August 1773 – 10 August 1843) was a German post-Kantian philosopher and mathematician.