Proving that one must affirm axiomatic propositions that are true without needing to be proven, and axiomatic concepts that are understandable without needing to be defined.
Abd Al-Qahir: the Sophists
The term “sophist” is used to refer to a person who argues using premises that he himself knows are false. Imam Abd Al-Qahir Al-Baghdadi briefly responds to the three major ‘schools’ of sophistry.
Keys to the Unseen 