There is in so many books in which the subject is treated a certain air of
despondency - as if this space apprehension were a kind of veil which shut us off
from nature. But there is no need to adopt this feeling. . . . [We must recognize] the
fact that it is by means of space that we apprehend what is.
Space is the instrument of the mind.
Very often a statement which seems to be very deep and abstruse and hard to
grasp, is simply the form into which deep thinkers have thrown a very simple and
practical observation. And for the present, let us look on Kant's great doctrine of
space from a practical point of view, and it comes to this - it is important to develop
the space sense, for it is the means by which we think about real things.
Now according to Kant [continues Hinton], the space sense or the intuition of
space, is the most fundamental power of the mind. But I do not find anywhere a
systematic and thoroughgoing education of the space sense. ... It is left to be
organized by accident. . . . [And yet a special development of space-sense makes
perfectly clear and simple] a whole series of new conceptions. . . .
Fichte, Schelling, Hegel have developed certain tendencies of Kant and have
written remarkable books. But the true successors of Kant are Gauss and
Lobatchewski.
For if our intuition of space is the means by which we apprehend, then it follows
that there may be different kinds of intuitions of space. . . . This intuition of space
must be coloured, so to speak, by the conditions (of the mental activity) of the being
which uses it. ...
By a remarkable analysis the great geometers above mentioned have shown that
space is not limited as ordinary experience would seem to inform us, but that we are
quite capable of conceiving different kinds of space.*
Hinton devised a complicated system for educating and developing space-sense by
means of exercises with a series of different coloured cubes. The books already
mentioned are devoted to the exposition of this system. In my opinion Hinton's
exercises are interesting from the point of view of theory, but can have a practical
significance only in those cases where people have the same mental make-up as
Hinton.
According to Hinton, his system of mental exercises should, first of all, lead to the
development of the ability to
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