e made subordinate and sacrificed to the necessity of
the understanding. From this it follows that the exposition must be so
fashioned as to overthrow this effort of the imagination by the exclusion
of all that is individual and sensuous. The poetic impulse of
imagination must be curbed by distinctness of expression, and its
capricious tendency to combine must be limited by a strictly legitimate
course of procedure. I grant that it will not bend to this yoke without
resistance; but in this matter reliance is properly placed on a certain
amount of self-denial, and on an earnest determination of the hearer or
reader not to be deterred by the difficulties accompanying the form, for
the sake of the subject-matter. But in all cases where no sufficient
dependence can be placed on this self-denial, or where the interest felt
in the subject-matter is insufficient to inspire courage for such an
amount of exertion, it is necessary to resign the idea of imparting
strictly scientific knowledge; and to gain instead greater latitude in
the form of its presentation. In such a case it is expedient to abandon
the form of science, which exercises too great violence over the
imagination, and can only be made acceptable through the importance of
the object in view. Instead of this, it is proper to choose the form of
beauty, which, independent of the contents or subject, recommends itself
by its very appearance. As the matter cannot excuse the form in this
case, the form must trespass on the matter.

Popular instruction is compatible with this freedom. By the term popular
speakers or popular writers I imply all those who do not direct their
remarks exclusively to the learned. Now, as these persons do not address
any carefully trained body of hearers or readers, but take them as they
find them, they must only assume the existence of the general conditions
of thought, only the universal impulses that call attention, but no
special gift of thinking, no acquaintance with distinct conceptions, nor
any interest in special subjects. These lecturers and authors must not
be too particular as to whether their audience or readers assign by their
imagination a proper meaning to their abstractions, or whether they will
furnish a proper subject-matter for the universal conceptions to which
the scientific discourse is limited. In order to pursue a safer, easier
course, these persons will present along with their ideas the perceptions
and separate cases to