You have chosen 'On the Nature of Mathematical Reasoning' by Henri Poincaré, 'Il Saggiatore ('The Assayer')' by Galileo Galilei and 'Mind, Brain and the Quantum' by Michael Lockwood
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| A. | A Priori Knowledge | |
| B. | Perception | |
| C. | Rationalism | |
| D. | Empiricism | |
| E. | Direct Knowledge |