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we propose to attempt in the following chapter。
CHAPTER III。 The Ideal of Pure Reason。
SECTION I。 Of the Ideal in General。
We have seen that pure conceptions do not present objects to the
mind； except under sensuous conditions； because the conditions of
objective reality do not exist in these conceptions； which contain； in
fact； nothing but the mere form of thought。 They may； however； when
applied to phenomena； be presented in concreto； for it is phenomena
that present to them the materials for the formation of empirical
conceptions； which are nothing more than concrete forms of the
conceptions of the understanding。 But ideas are still further
removed from objective reality than categories； for no phenomenon
can ever present them to the human mind in concreto。 They contain a
certain perfection； attainable by no possible empirical cognition； and
they give to reason a systematic unity； to which the unity of
experience attempts to approximate； but can never completely attain。
But still further removed than the idea from objective reality is
the Ideal； by which term I understand the idea； not in concreto； but
in individuo… as an individual thing； determinable or determined by
the idea alone。 The idea of humanity in its complete perfection
supposes not only the advancement of all the powers and faculties；
which constitute our conception of human nature； to a complete
attainment of their final aims； but also everything which is requisite
for the complete determination of the idea； for of all contradictory
predicates； only one can conform with the idea of the perfect man。
What I have termed an ideal was in Plato's philosophy an idea of the
divine mind… an individual object present to its pure intuition； the
most perfect of every kind of possible beings； and the archetype of
all phenomenal existences。
Without rising to these speculative heights； we are bound to confess
that human reason contains not only ideas； but ideals； which
possess； not； like those of Plato； creative； but certainly practical
power… as regulative principles； and form the basis of the
perfectibility of certain actions。 Moral conceptions are not perfectly
pure conceptions of reason； because an empirical element… of
pleasure or pain… lies at the foundation of them。 In relation；
however； to the principle； whereby reason sets bounds to a freedom
which is in itself without law； and consequently when we attend merely
to their form； they may be considered as pure conceptions of reason。
Virtue and wisdom in their perfect purity are ideas。 But the wise
man of the Stoics is an ideal； that is to say； a human being
existing only in thought and in complete conformity with the idea of
wisdom。 As the idea provides a rule； so the ideal serves as an
archetype for the perfect and complete determination of the copy。 Thus
the conduct of this wise and divine man serves us as a standard of
action； with which we may compare and judge ourselves； which may
help us to reform ourselves； although the perfection it demands can
never be attained by us。 Although we cannot concede objective
reality to these ideals； they are not to be considered as chimeras； on
the contrary； they provide reason with a standard； which enables it to
estimate； by comparison； the degree of incompleteness in the objects
presented to it。 But to aim at realizing the ideal in an example in
the world of experience… to describe； for instance； the character of
the perfectly wise man in a romance… is impracticable。 Nay more； there
is something absurd in the attempt； and the result must be little
edifying； as the natural limitations； which are continually breaking
in upon the perfection and completeness of the idea； destroy the
illusion in the story and throw an air of suspicion even on what is
good in the idea； which hence appears fictitious and unreal。
Such is the constitution of the ideal of reason； which is always
based upon determinate conceptions； and serves as a rule and a model
for limitation or of criticism。 Very different is the nature of the
ideals of the imagination。 Of these it is impossible to present an
intelligible conception； they are a kind of monogram； drawn
according to no determinate rule； and forming rather a vague
picture… the production of many diverse experiences… than a
determinate image。 Such are the ideals which painters and
physiognomists profess to have in their minds； and which can serve
neither as a model for production nor as a standard for
appreciation。 They may be termed； though improperly； sensuous
ideals； as they are declared to be models of certain possible
empirical intuitions。 They cannot； however； furnish rules or standards
for explanation or examination with
In its ideals； reason aims at complete and perfect determination
according to a priori rules； and hence it cogitates an object； which
must be completely determinable in conformity with principles；
although all empirical conditions are absent； and the conception of
the object is on this account transcendent。
SECTION II。 Of the Transcendental Ideal （Prototypon
Trancendentale）。
Every conception is； in relation to that which is not contained in
it； undetermined and subject to the principle of determinability。 This
principle is that； of every two contradictorily opposed predicates；
only one can belong to a conception。 It is a purely logical principle；
itself based upon the principle of contradiction； inasmuch as it makes
complete abstraction of the content and attends merely to the
logical form of the cognition。
But again； everything； as regards its possibility； is also subject
to the principle of complete determination； according to which one
of all the possible contradictory predicates of things must belong
to it。 This principle is not based merely upon that of
contradiction； for； in addition to the relation between two
contradictory predicates； it regards everything as standing in a
relation to the sum of possibilities； as the sum total of all
predicates of things； and； while presupposing this sum as an a
priori condition； presents to the mind everything as receiving the
possibility of its individual existence from the relation it bears to；
and the share it possesses in； the aforesaid sum of possibilities。*
The principle of complete determination relates the content and not to
the logical form。 It is the principle of the synthesis of all the
predicates which are required to constitute the complete conception of
a thing； and not a mere principle analytical representation； which
enounces that one of two contradictory predicates must belong to a
conception。 It contains； moreover； a transcendental presupposition…
that； namely； of the material for all possibility； which must
contain a priori the data for this or that particular possibility。
*Thus this principle declares everything to possess a relation to
a common correlate… the sum…total