Sentence:  Neither can I reconcile this opinion of yours, with your argument brought from reaſon; if the <WSD>axiom</WSD> there laid down by you be true, it follows that, when matter began to exiſt in the divine mind, either matter became of the nature of the divine mind, "i.e." active and intelligent, or elſe the divine mind became of the nature of matter, "i.e." inert and unintelligent: this is a hard dilemma; have we not reaſon to ſuſpect that <WSD>axiom</WSD>? 
Meaning of the word marked with <WSD> tags:  A seemingly self-evident or necessary truth which is based on assumption; a principle or proposition which cannot actually be proved or disproved.