You have chosen 'Realistic Rationalism' by Jerrold J. Katz, 'Principles of Philosophy of the Future' by Ludwig Feuerbach and 'Introduction to Philosophical Papers I' by David Lewis
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| A. | Modes of Thought | |
| B. | Mechanics of Thought | |
| C. | Content | |
| D. | Concepts | |
| E. | Abstraction |