Since, again, in regard to some of the views they express, most people would say that anyone who did not admit them was telling a falsehood, while they would not say this in regard to some, eg to any matters whereon opinion is divided (for most people have no distinct view whether the soul of animals is destructible or immortal), accordingly wherever it is uncertain in which of two senses the premiss proposed is usually meant whether as maxims are (for people call both true opinions and general assertions maxims), or like 'the diagonal of a square is incommensurate with its side'; and moreov whenever opinions are divided as to the truth, we then have subjects of which it is very easy to change the terminology undetected.