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  • kcantekin 8:23 am on March 8, 2017 Permalink | Reply
    Tags: , , logic   

    Concerning the necessity of logic 

    Epictetus – Discourses Book 1
    I.17. Concerning the necessity of logic

    Logic is at the head of the Stoic curriculum because it is a useful tool in weighing and measuring abstractions.

    We can use logic to analyse concepts and terms, and forestall any uncertainty as to their meanings.

    But we should keep in mind that logic is only a tool for interpreting nature. Logic does not create truth by itself; but through logic we may better understand God and the will of nature.

     
  • kcantekin 12:56 pm on February 8, 2017 Permalink | Reply
    Tags: , , , hypotheses, logic, premises   

    On the utility of changing arguments, hypothetical arguments and the rest 

    Epictetus – Discourses Book 1
    I.7. On the utility of changing arguments, hypothetical arguments and the rest

    If you want to walk the path of the philosopher, you must learn how to logically differentiate true from false. You have to be able to distinguish a valid argument from fallacies and sophistry.

    Therefore you must learn the rules of consequence to know how conclusions follow premises:

    1. When considering an argument be careful that the premises you have admitted are not changed when the conclusion is reached.
    2. Put differently, you should not accept conclusions that change their premises.
    3. But if the premises are not changed and you have admitted them, you have the obligation to accept what flows from them.

    The same goes for hypotheses and hypothetical arguments:

    1. Once you grant an hypothesis, you should accept only what is consistent with it, and reject what is in conflict.
    2. You cannot grant an hypothesis and then accept another that is conflict with the latter.

    Learning and knowing these rules are crucial to tell valid proof from fallacy.

     
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