The same thing occurs with the other errors, when we refer to the other concepts of the spirit or of reality, although we shall not be able to give the complete series without summarizing the whole of philosophy, which is not necessary here, and by its excessive concentration and extreme brevity would be obscure. Suffice it to say, by way of example, that the ethical problem, besides being negated by means of erroneous sensationalist, empiricist, and mycologist solutions, and so on (to which, in common with all philosophic problems, it is subject), can be negated by practical intellectualism, which does not recognize a practical problem side by side with that of the theoretic spirit, and reduces virtue to knowledge. Hence _ethical intellectualism._ Since ethical intellectualism cannot resist objections, it is obliged to introduce at least the slightest practical element that can be admitted, which is that of individual utility, and resolving morality into this, it then presents itself as _ethical utilitarianism._ This in its turn, finding itself in contradiction with the peculiar character of morality, which goes beyond individual utility, arranges to recognize and to substitute for the first a super-individual utility, which is the universal practical value or morality. And thus, by negating the first on account of the second concept, it presents itself as _moralism_ or _ethical abstractionism._ The impossibility of negating both the first and the second, and the necessity of affirming both, urge the acceptance of the final form of _practical dualism,_ in which utility and morality appear as co-ordinated or juxtaposed. Each one of these arbitrary doctrines is critical of the others, and, by its internal contradictions, of itself. Hence the fall into scepticism and mysticism. The circle of error can be traversed again, but it is impossible to alter the place that each of those forms has in the circle, by placing, for instance, practical dualism before utilitarianism or intellectualism after moralism. [Sidenote: _Spirit of error and spirit of search._] There is no gradual issuing from the infernal circle of error, and salvation from it is not possible, save by entering at one stroke into the celestial circle of truth, in which alone the mind rests satisfied as in its kingdom. The spirit that _errs_ or flees from the light must be converted into the spirit of _search,_ that longs for the light; pride must yield to humility; narrow love for one's own abstract individuality become wider and elevate itself to an austere love, to an unlimited devotion toward that which surpasses the individual, thus becoming an "heroic fury," the "_amor Dei intellectualis._" [Sidenote: _Immanence of error in truth._]