Nay, they would themselves repel it as
a slight if the epithet "imaginative" were applied to them; it would
seem to impugn their gravity, to cast doubts upon their accuracy. But
such men are the cisterns, not the fountains, of Science. They rely
upon the knowledge already organised; they do not bring accessions to
the common stock. They are not investigators, but imitators; they are
not discoverers--inventors. No man ever made a discovery (he may have
stumbled on one) without the exercise of as much imagination as,
employed in another direction and in alliance with other faculties,
would have gone to the creation of a poem. Every one who has seriously
investigated a novel question, who has really interrogated Nature with
a view to a distinct answer, will bear me out in saying that it
requires intense and sustained effort of imagination. The relations of
sequence among the phenomena must be seen; they are hidden; they can
only be seen mentally; a thousand suggestions rise before the mind, but
they are recognised as old suggestions, or as inadequate to reveal what
is sought; the experiments by which the problem may be solved have to
be imagined; and to imagine a good experiment is as difficult as to
invent a good fable, for we must have distinctly PRESENT--clear mental
vision--the known qualities and relations of all the objects, and must
see what will be the effect of introducing some new qualifying agent.
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