Sextus Empiricus Pyrrhoniae Hypotyposes 3.29.261

[261] But if one apprehension makes the non-expert an expert, it will be open to us to declare, firstly, that art is not a system of apprehensions; ¹ for the man who knows nothing at all would be termed an expert if only he were taught a single lesson of art. And, secondly, should anyone assert that, as soon as a man who has acquired some principles of art and still needs one more, and because of this is non-expert, acquires also that one principle, he at once becomes an expert instead of a non-expert by means of one apprehension, he will be making a random assertion. ²