Daniele De Santis is an Assistant Professor at the Department of Philosophy and Religious Studies (ÚFAR) of Charles University, Prague. He has published extensively on 20th century phenomenology, with a special focus on Husserl and the Göttingen circle.  His interests cover a wide array of different areas, including Plato and the history of Platonism, Kant and transcendental philosophy, as well as Derrida and the tradition of French phenomenology. He is the author of Derrida tra le fenomenologie: 1953-1967. La differenza e il trascendentale (2018); Di Idee ed essenze. Un dibattito su fenomenologia e ontologia (1921-1930) (2014). He is also the co-editor of Edmund Husserl between Platonism and Aristotelianism (2018).

Part I. Introduction: Phaenomenologia Iuxta Propria Principia.- Part II. Husserl on Psychologism and the A Priori.- Chapter 1. Metaphysical Hypostatization.- Chapter 2. A Question of Truth.- Part III. Husserl on the Notion of A Priori before The Eidos.- Chapter 3. On the Way to the Eidos.- Chapter 4. The Doctrine of Ideality and the A Priori in the Logical Investigations.- Chapter 5. Essence, Idea, and the A Priori after the Logical Investigations.- Part IV. On How to Apprehend the Ideal: Three Different Stages.- Chapter 6. Ideation, Attitude, Reduction.- Part V. Essence, Pure Essence, Eidos. The Doctrine of the A Priori in Ideas I.- Chapter 7. Essence and Eidos.- Chapter 8. The Function of Eidetic Sciences.- Chapter 9. ¿¿de t¿, Individuum, Region.- Part VI. Adventures and Misadventures of the Rationalität.- Chapter 10. Rationalization.- Chapter 11. The Conflict Between Different Forms of Rationality.- Part VII. Formal and Material, Innate and Contingent A Priori.- Chapter 12. Formal and Material, Analytic and Synthetic A Priori.- Chapter 13. From Formal to Innate-From Material to Contingent: The Development of the Concept of A Priori in Light of the Genetic Perspective.- Part VIII. Conclusion (Notes for Future Research).- Index.