“After such a cheerful commencement, a serious word would like to be heard; it appeals to the most serious. Take care, philosophers and friends, of knowledge, and beware of martyrdom! Of suffering “for the truth’s sake”! Even of defending yourselves! It spoils all the innocence and fine neutrality of your conscience; it makes you headstrong against objections and red rags; it stupefies, animalizes, and brutalizes when in the struggle with danger, slander, suspicion, expulsion, and even worse consequences of hostility, you have to pose as protectors of truth upon earth—as though “the truth” were such an innocuous and incompetent creature as to require protectors!”