You have chosen 'Counterpart theory and Quant. Modal Logic' by David Lewis, 'Problems in Personal Identity' by James Baillie and 'Elements of Mathematical Logic' by Jan Lukasiewicz
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| A. | Modes of Thought | |
| B. | Mechanics of Thought | |
| C. | Content | |
| D. | Concepts | |
| E. | Abstraction |