You have chosen 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo, 'Two Problems for Essentialism' by David M. Armstrong and 'Mathematics, Science and Language' by Luitzen E.J. Brouwer
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| A. | Classical Physics | |
| B. | Modern Physics | |
| C. | Space | |
| D. | Time | |
| E. | Cosmology | |
| F. | Chemistry | |
| G. | Biology |