You have chosen 'An Argument for the Identity Theory' by David Lewis, 'De Re Aedificatoria' by Leon Battista Alberti and 'Course of Positive Philosophy' by Auguste Comte
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| A. | Modes of Thought | |
| B. | Mechanics of Thought | |
| C. | Content | |
| D. | Concepts | |
| E. | Abstraction |