conceptus tam continui, quam infiniti, a plurimis rejiciantur, quippe quorum, secundum leges cognitionis intuitivae, repraesentatio est impossibilis. Quanquam autem harum e non paucis scholis explosarum notionum, praesertim prioris, causam hic non gero, maximi tamen momendi erit monuisse. gravissimo illos errore labi, qui tam perverse argumentandi ratione utuntur. Quicquid enim repugnat legibus intellectus et rationis, utique est impossibile; quod autem, cum rationis purae sit objectum, legibus cognitionis intuitivae tantummodo non subest, non item. Nam hic dissensus inter facultatem sensitivam et intellectualem, (quarum indolem mox exponam,) nihil indigitat, nisi, quas mens ab intellectu acceptas fert ideas abstractas, illas in concreto exsequi et in intuitus commutare saepenumero non posse. Haec autem reluctantia subjectiva mentitur, ut plurimum, repugnantiam aliquam objectivam, et incautos facile fallit, limitibus, quibus mens humana circumscribitur, pro iis habitis, quibus ipsa rerum essentia continetur. [54] Critics, who are most ready to bring this charge of pedantry and unintelligibility, are the most apt to overlook the important fact, that, besides the language of words, there is a language of spirits--(sermo interior)--and that the former is only the vehicle of the latter. Consequently their assurance, that they do not understand the philosophic writer, instead of proving any thing against the philosophy, may furnish an equal, and (caeteris paribus) even a stronger presumption against their own philosophic talent. Great indeed are the obstacles which an English metaphysician has to encounter. Amongst his most respectable and intelligent judges, there will be many who have devoted their attention exclusively to the concerns and interests of human life, and who bring with them to the perusal of a philosophic system an habitual aversion to all speculations, the utility and application of which are not evident and immediate. To these I would in the first instance merely oppose an authority, which they themselves hold venerable, that of Lord Bacon: non inutiles Scientiae existimandae sunt, quarum in se nullus est usus, si ingenia acuant et ordinent.