Such a thorough agreement, wholly unsought for and quite obvious (as anyone can convince himself, if he will only carry moral inquiries up to their principles), between the most important proposition of practical reason and the often seemingly too subtle and needless remarks of the Critique of the Speculative Reason, occasions surprise and astonishment, and confirms the maxim already recognized and praised by others, namely, that in every scientific inquiry we should pursue our way steadily with all possible exactness and frankness, without caring for any objections that may be raised from outside its sphere, but, as far as we can, to carry out our inquiry truthfully and completely by itself.
Inolaz ere bilatu ez den (norberak lor dezake konbentzimendua, azterketa moralak euren printzipioetaraino jarraitu besterik ez du egin behar), baizik eta berez gertatzen den bateratze zehatzak, arrazoimen praktikoaren esakune garrantzitsuenaren eta arrazoimen espekulatiboaren kritikaren sarri sotilegi eta alferrikako diruditen oharren artekoak, harritu egiten du eta miresten du eta indartzen du besteek ezagutu duten eta goraipatu duten maxima, hots, azterketa zientifiko orotan zehaztasun eta irekitasun albait handienarekin egitea bidea lasai-lasai, bere eremutik at legokeen eragozpenari arretarik eskaini gabe, baizik eta azterketa bere kabuz ahal duen neurrian egiaz eta osorik osatuz.