as for the first evidence which is their saying that whoever believes his mind has lied to him since he believes the mind of his opponent 2 h and his opponent declares his lie we say that this is a false imagination from the aspects of the first opposition with an example which is that we say that we believe the minds in their theories and you believe them in their necessities and your opponents from the sophists lie to you in them. if this requires the necessity of admitting the falsehood of the necessary sciences then it is necessary for us from your disagreement to admit the falsehood of the theoretical sciences because if the mind is true
أما الدلالة الأولى وهي قولهم من صدق عقله فقد كذبه اذ صدق عقل خصم ٢ ه وخصمه يصرح بتكذيبه فنقول هذا تخييل باطل من وجوه الاول المعارضة بمثال وهو أنا نقول نحن صدقنا العقول في نظرياتها وانتم صدقتموها في ضرورياتها وخصومكم من السوفسطائية يكذبونكم فيها فإن إقتضى ذلك لزوم الاعتراف بكذب العلوم الضرورية لزمنا من خلافكم الاعتراف بكذب العلوم النظرية فان العقل إن صدق