Combining Philosophers

All the ideas for Hastings Rashdall, Metrodorus (Lamp) and Dag Prawitz

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11 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

13831

Logic is based on transitions between sentences [Prawitz]

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

13827

Logical consequence isn't a black box (Tarski's approach); we should explain how arguments work [Prawitz]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

13825

Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz]

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

13823

In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz]

5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models

13826

Model theory looks at valid sentences and consequence, but not how we know these things [Prawitz]

16. Persons / B. Nature of the Self / 2. Ethical Self

1457	Morality requires a minimum commitment to the self [Rashdall]

22. Metaethics / B. Value / 1. Nature of Value / e. Means and ends

6674	All moral judgements ultimately concern the value of ends [Rashdall]

23. Ethics / A. Egoism / 2. Hedonism

5954	All inventions of the mind aim at pleasure, and those that don't are worthless [Metrodorus of Lamp., by Plutarch]

23. Ethics / E. Utilitarianism / 6. Ideal Utilitarianism

6673	Ideal Utilitarianism is teleological but non-hedonistic; the aim is an ideal end, which includes pleasure [Rashdall]

28. God / B. Proving God / 2. Proofs of Reason / c. Moral Argument

1458	Conduct is only reasonable or unreasonable if the world is governed by reason [Rashdall]

1459	Absolute moral ideals can't exist in human minds or material things, so their acceptance implies a greater Mind [Rashdall, by PG]