_Sokr._--Here then, you have been long dragging me round in a circle, keeping back the fact, that well-doing and happiness does not arise from living according to science generally, not of all other matters taken together--but from living according to the science of this one single matter, good and evil. If you exclude this last, and leave only the other sciences, each of these others will work as before: the medical man will heal, the weaver will prepare clothes, the pilot will navigate his vessel, the general will conduct his army--each of them scientifically. Nevertheless, that each of these things shall conduce to our well-being and profit, will be an impossibility, if the science of good and evil be wanting.[27] Now this science of good and evil, the special purpose of which is to benefit us,[28] is altogether different from temperance; which you have defined as the science of cognition and non-cognition, and which appears not to benefit us at all. _Krit._--Surely it does benefit us: for it presides over and regulates all the other sciences, and of course regulates this very science, of good and evil, among the rest. _Sokr._--In what way can it benefit us? It does not procure for us any special service, such as good health: _that_ is the province of medicine: in like manner, each separate result arises from its own producing art. To confer benefit is, as we have just laid down, the special province of the science of good and evil.[29] Temperance, as the science of cognition and non-cognition, cannot work any benefit at all. [Footnote 27: Plato, Charm. 174 C-D. [Greek: e)pei\ ei) the/leis e)xelei=n tau/tên tê\n e)pistê/mên] (of good and evil) [Greek: e)k tô=n a)/llôn e)pistêmô=n, ê(=tto/n ti ê( me\n i)atrikê\ u(giai/nein poiê/sei, ê( de\ skutikê\ u(podede/sthai, ê( de\ u(phantikê\ ê(mphie/sthai, ê( de\ kubbernêtikê\ kôlu/sei e)n tê=| thala/ttê| a)pothnê/skein kai\ ê( stratêgikê\ e)n pole/mô|? Ou)de\n ê(=tton, e)/phê. A)lla\ to\ eu)= te tou/tôn e(/kasta gi/gnesthai kai\ ô)pheli/môs a)poleloipo\s ê(ma=s e)/stai tau/tês a)pou/sês.]] [Footnote 28: Plato, Charm. 174 D. [Greek: ê(=s e)/rgon e)sti\ to\ ô)phelei=n ê(ma=s], &c.] [Footnote 29: Plato, Charm. 175 A. [Greek: Ou)k a)/ra u(giei/as e)/stai dêmiourgo/s (ê( sôphrosu/nê). Ou) dê=ta. A)/llês ga\r ê)=n te/chnês u(giei/a, ê)\ ou)/? A)/llês. Ou)d' a)/ra ô)phelei/as, ô)= e(/taire; a)/llê| ga\r au)= a)pe/domen tou=to to\ e)/rgon te/chnê| nu=n dê/; ê)= ga/r? Pa/nu ge. Pô=s ou)=n ô)phe/limos e)/stai ê( sôphrosu/nê, ou)demia=s ô)phelei/as ou)=sa dêmiourgo/s? Ou)damô=s, ô)= Sô/krates, e)/oike/ ge.]] [Side-note: Sokrates confesses to entire failure in his research. He cannot find out what temperance is: although several concessions have been made which cannot be justified.]