The active principle then and the starting point for the process of becoming healthy is, if it happens by art, the form in the soul, and if spontaneously, it is that, whatever it is, which starts the making, for the man who makes by art, as in healing the starting-point is perhaps the production of warmth (and this the physician produces by rubbing).
baina bere kasa sortzen bada, abiapuntua izango da artez ekoizten duenaren ekoizpenaren abiapuntu bera, sendabidean, agian, 25) abiapuntua berotzea den bezala (hau igurtzien bidez lortzen da).