It seems strange that it should be necessary to explain these elementary concepts; yet in our time it is necessary, so much have those concepts been darkened for historical reasons, which it would take long to expound here, and which can all of them be summarized as due to a certain moral weakening. And it may be opportune here to give a warning (since we are dealing with a theme that belongs to the elementary school of philosophy) that to inculcate the courage to confront and to solve the problem and to conquer the mystery, is not to counsel the neglect of difficulties, or superficiality and arrogance. Mysteries are covered and must continually be covered by their own shadows; problems torment and must torment, yet it is only through these shadows and by means of those torments that we attain to momentary repose in the true; and only thus does repose not become sloth, but the restoration of our forces to resume the eternal journey. Superficiality, arrogance, neglect of difficulties, belong to the sceptics who deafen themselves with words and contrive to live at their ease in their abstract negation. True thinkers suffer, but do not flee from pain. "Et iterum ecce turbatio (groans St. Anselm amid the anxious vicissitudes of his meditations), ecce iterum obviat maeror et luctus quaerenti gaudium et laetitiam. Sperabat jam anima mea satietatem, et ecce iterum obruitur egestate. Conabar assurgere ad lucem Dei, et recidi in tenebras meas: immo non modo cecidi in eas, sed sentio me involutum in eis...."[1] Such words as these are the pessimistic lyric of the thinker. Sceptics create no such lyric, because they have cut the desire at the root. They are as a rule blissfully calm and smiling.

Agnosticism as a particular form of scepticism.

There is a form of scepticism which would like to appear critical and refined and which takes the name of agnosticism. It is a scepticism limited to ultimate things, to profound reality, to the essence of the world, which amounts to saying that it is limited to the supreme principles of philosophy. Now, since the principles of philosophy are all equally supreme, such agnostic scepticism extends its affirmation of mystery over neither more nor less than the whole of philosophy and consequently over the whole of human knowledge. Its limits would be nothing less than the boundaries of knowledge. Indeed, agnosticism is the spiritual fulfilment sought by all those who negate philosophy, such as æstheticists, mathematicians, and especially empiricists; and agnostics and empiricists are ordinarily so closely connected that the one name is almost synonymous with the other.

Mysticism.

The sceptical error, which consists in stating the problem as solution and mystery as truth, can give way to another mode of error, in which the very affirmation of scepticism is denied and it is recognized that thought cannot explicitly state mystery. But this recognition, which would imply that of the authority of thought, is strangely combined with the most precise negation of such authority. Thought being excluded, either affirmatively or negatively, as in the self-contradiction of scepticism, what remains is life, no longer a problem, or a solution of a problem, but just life, life lived. To affirm that truth is life lived, reality directly felt in us as part of us and we part of it, is the pretension of mysticism. This is the last general form of error that can be thought; and its self-contradiction is evident from the genetic process which we have already expounded. Mysticism affirms, when no affirmation is permitted to it; and it is yet more gravely contradictory than scepticism, which, though forbidding to itself logical affirmation, does not forbid itself speech, that is to say, æsthetic expression. To mysticism not even words can be permissible, because mysticism, being life and not contemplation, practice and not theory, is by definition dumbness. But we shall say no more of mysticism, having had occasion to refer to it, as also to æstheticism and empiricism, at the beginning of this treatise on Logic.

Errors in the other parts of philosophy.

When we consider these errors more closely, it is easy to see that dualism, scepticism, and mysticism manifest themselves not only in the forms of thought, in philosophy as Logic, but also in all the other particular philosophic problems, distinct from those that are peculiar to Logic, and in the errors due to them. The complete enumeration of these and their concrete determination would (as has already been said) require the development of the whole philosophic system, and therefore cannot all be contained in the present treatise. Indeed, they take their name, not from the forms of the spirit, with which the logical form is confused, or from the internal mutilation of the logical form, but from the confusion and mutilation of the remaining spiritual forms. They are no longer called æstheticism, mathematicism, or philosophism, but ethical utilitarianism, moral abstractionism, æsthetic logicism, sensationalism and hedonism, practical intellectualism, metaphysical dualism or pluralism, optimism and pessimism, and so on. It is not those who, as in the previous instances, deny philosophy itself, that fall into such errors, but those who admit it and carry it out more or less badly in its other parts. Without the admission of the method of philosophic thought, and without the assertion of a concept, it is impossible to conceive logical usurpations in the domain of another concept, which is not less necessary than the first to the fulness and unity of the real.

Ethical utilitarianism, for instance, thinks the concept of utilitarian practical activity; but its fallacy consists in arbitrarily maintaining that the concept of utility altogether exhausts that of the practical activity, thus negating the other concept distinct from it, the practical moral activity. Moral abstractionism commits the opposite error, affirming the moral activity, but negating the utilitarian. Æsthetic logicism rightly affirms the reality of the logical mental form, but is wrong in not recognizing the intuitive mental form and in considering it to be resolved in the logical form. Æsthetic sensationalism, directing its attention to crude and unexpressed sensation, emphasises the necessary precedent of the æsthetic activity, but then makes of the condition the conditioned, defining art as sensation. Æsthetic hedonism, utilitarianism or practicism, is true in so far as it notes the practical and hedonistic envelope of the æsthetic activity; but it becomes false in so far as it takes the envelope for the content, and treats art as a mere fact of pleasure and pain. Practical intellectualism perceives that the will is not possible without a cognitive basis, but by exaggerating this, it ends by destroying the originality of the practical spiritual form, and reduces it to a complex of concepts and reasonings. In like manner, metaphysical dualism avails itself of the difference between the concept of reality as spirit and that of reality as nature, the one arising from logical thought, the other from an empirical and naturalistic method of treatment, in order to transmute them into concepts of two distinct forms of reality itself, as spirit and matter, internal and external world, and so on. Pluralism or monadism, confounding the individuality of acts with the substantiality which belongs to the universal subject, makes entities of single acts and turns them into a multiplicity of simple substances. Pessimism and optimism, each one availing itself of an abstract element of reality, which is the unity of opposites, maintain that reality is all evil and suffering, or all goodness and joy. This process of exemplification could be carried much further, and would become, as we see, a deduction of all philosophical concepts and errors.

Conversion of these errors with one another and with logical errors.