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  2. Philosophy of logic - Wikipedia

    en.wikipedia.org/wiki/Philosophy_of_logic

    Philosophy of logic is the area of philosophy ... the regularities found in actual human ... lacking concrete or material existence. [92] Within logic, these problems ...

  3. Philosophical logic - Wikipedia

    en.wikipedia.org/wiki/Philosophical_logic

    In this sense, it forms one area of the philosophy of logic. [1] Central to philosophical logic is an understanding of what logic is and what role philosophical logics play in it. Logic can be defined as the study of valid inferences. [4] [6] [9] An inference is the step of reasoning in which it moves from the premises to a conclusion. [10]

  4. Argument from reason - Wikipedia

    en.wikipedia.org/wiki/Argument_from_reason

    4. So human reason must come from a source outside nature that is itself rational (from 1 and 3). 5. This supernatural source of reason may itself be dependent on some further source of reason, but a chain of such dependent sources cannot go on forever. Eventually, we must reason back to the existence of eternal, non-dependent source of human ...

  5. Ludwig Wittgenstein - Wikipedia

    en.wikipedia.org/wiki/Ludwig_Wittgenstein

    Ludwig Josef Johann Wittgenstein (/ ˈ v ɪ t ɡ ən ʃ t aɪ n,-s t aɪ n / VIT-gən-s(h)tyne, [7] Austrian German: [ˈluːdvɪk ˈjoːsɛf ˈjoːhan ˈvɪtɡn̩ʃtaɪn]; 26 April 1889 – 29 April 1951) was an Austrian philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language.

  6. Philosophy - Wikipedia

    en.wikipedia.org/wiki/Philosophy

    Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, value, mind, and language.

  7. Metaphysics - Wikipedia

    en.wikipedia.org/wiki/Metaphysics

    Metaphysics is the branch of philosophy that examines the basic structure of reality. It is traditionally seen as the study of mind-independent features of the world, but some theorists view it as an inquiry into the conceptual framework of human understanding.

  8. Secular humanism - Wikipedia

    en.wikipedia.org/wiki/Secular_humanism

    Secular humanism is a philosophy, belief system, or life stance that embraces human reason, logic, secular ethics, and philosophical naturalism, while specifically rejecting religious dogma, supernaturalism, and superstition as the basis of morality and decision-making. [1] [2] [3] [4]

  9. Existentialism - Wikipedia

    en.wikipedia.org/wiki/Existentialism

    Existentialism is a family of philosophical views and inquiry that study existence from the individual's perspective and explore the human struggle to lead an authentic life despite the apparent absurdity or incomprehensibility of the universe.