In his work on the Analysis of the Sensations and the Relation of the Physical to the Psychical, Dr. E. Mach tells us that not even the investigator, the savant, der Forscher, is exempted from taking his part in the struggle for existence, that even the roads of science lead mouth-wards, and that in the actual conditions of the society in which we live the pure instinct of knowing, der reine Erkenntnisstrieb, is still no more than an ideal. And so it always will be.
E. Mach doktoreak, bere "Sentsazioen analisia eta fisikoak psikikoarekin duen harremana" bere obran (Die Analyse der Empfindungen und das Verhältniss des Physischen zum Psychischem), ohar batez (I, L, 12. §) dioskunez ikertzailea, jakintsua (der Forscher) bera ere, existentziaren aldeko batailan borrokan ari da, zientziaren bideek ere ahora daramate, eta gure egungo gizarte-egoeretan ezagutzeko instintu hutsa, der reine Erkenntnisstrieb, ez da ideal bat besterik. Eta beti honela izango da.