Those, then, are to be praised who explain the points which have been duly mentioned, as also those who add what has been left out; for it is not possible for the same man to make both a beginning and an end. Those, on the other hand, deserve censure who are so impatient that they will not wait to learn any of the things which have been duly mentioned, as do also those who are so ambitious that, in their lust after novel doctrines, they are always attempting some fraudulent sophistry, either purposely neglecting certain subjects, as Erasistratus does in the case of the humours, or unscrupulously attacking other people, as does this same writer, as well as many of the more recent authorities. But let this discussion come to an end here, and I shall add in the third book all that remains. IX Mê toinyn hôs apodeixeis hyph' hêmôn eirêsthai nomizein ta toiauta mallon ê peri tês tôn allôs gignôskontôn anaisthêsias endeixeis, hoi mêde ta pros hapantôn homologoumena kai kath' hekastên hêmeran phainomena gignôskousin; tas d' apodeixeis autôn tas kat' epistêmên ex ekeinôn chrê lambanein tôn archôn, hôn êdê kai prosthen || eipomen, hôs to dran kai paschein eis allêla 126 tois sômasin hyparchei kata to thermon kai psychron kai xêron kai hygron. kai eite phlebas eith' hêpar eit' artêrias eite kardian eite koilian eit' allo ti morion energein tis phêseien hêntinoun energeian, aphyktois anankais anankasthêsetai dia tên ek tôn tettarôn poian krasin homologêsai tên energeian hyparchein autô. dia ti gar hê gastêr peristelletai tois sitiois, dia ti d' hai phlebes haima gennôsi, para tôn Erasistrateiôn edeomên akousai. to gar hoti peristelletai monon auto kath' heauto gignôskein oudepô chrêston, ei mê kai tên aitian eideiêmen; houtô gar an oimai kai ta sphalmata therapeusaimen. ou melei, phasin, hêmin oude polypragmonoumen eti tas toiautas aitias; hyper iatron gar eisi kai tô physikô prosêkousi. poteron oun oud' antereite tô phaskonti tên men eukrasian tên kata physin aitian einai tês energeias hekastô tôn organôn, tên d' au dyskrasian noson t êdê kaleisthai kai pantôs hyp' au||tês blaptesthai tên energeian? ê peisthêsesthe tais 127 tôn palaiôn apodeixesin? ê triton ti kai meson hekaterou toutôn praxete mêth' hôs alêthesi tois logois ex anankês peithomenoi mêt' antilegontes hôs pseudesin, all' aporêtikoi tines exaiphnês kai Pyrrhôneioi genêsesthe? kai mên ei touto drasete, tên empeirian anankaion hymin prostêsasthai. tô gar an eti tropô kai tôn iamatôn euporoiête tên ousian hekastou tôn nosêmatôn agnoountes? ti oun ouk ex archês empeirikous hymas autous ekalesate? ti de pragmath' hêmin parechete physikas energeias epangellomenoi zêtein iaseôs heneken? ei gar adynatos hê gastêr esti tini peristellesthai kai tribein, pôs autên eis to kata physin epanaxomen agnoountes tên aitian tês adynamias? egô men phêmi tên men hypertethermasmenên