| title | ISBN-13 | year of publication |
|---|---|---|
| Four Reasonable Men: Marcus Aurelius, John Stuart Mill, Ernest Renan, Henry Sidgwick | 978-0-8195-5100-9 | 1984 |
| Reason and Belief | 978-0-300-01825-7 | 1975 |
| Reason and Belief | 978-0-04-230013-9 | 1974 |
| The Nature of Thought: 1 | 978-1-138-87110-6 | 2015 |
| The Uses of a Liberal Education: And Other Talks to Students | 978-0-8126-9429-1 | 1973 |
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