Old Aristo of Chios had reason to say that philosophers did their auditors harm, forasmuch as most of the souls of those that heard them were not capable of deriving benefit from instruction, which, if not applied to good, would certainly be applied to ill:
Haienarekin medizina ahul ta gaizki emanekin bezala gertatzen da: gutaz garbitu nahi zituen humoreak berotu, garraztu eta samindu ditu gatazkarekin, eta, gainera, gorputz barrenean gelditu zaigu.