Thus the highest beauty of form must be taken from nature; but it
is an art of long deduction and great experience to know how to
find it.
We must not content ourselves with merely admiring and relishing;
we must enter into the principles on which the work is wrought;
these do not swim on the superficies, and consequently are not open
to superficial observers.
Art in its perfection is not ostentatious; it lies hid, and works
its effect itself unseen. It is the proper study and labour of an
artist to uncover and find out the latent cause of conspicuous
beauties, and from thence form principles for his own conduct; such
an examination is a continual exertion of the mind, as great,
perhaps, as that of the artist whose works he is thus studying.
The sagacious imitator not only remarks what distinguishes the
different manner or genius of each master; he enters into the
contrivance in the composition, how the masses of lights are
disposed, the means by which the effect is produced, how artfully
some parts are lost in the ground, others boldly relieved, and how
all these are mutually altered and interchanged according to the
reason and scheme of the work. He admires not the harmony of
colouring alone, but he examines by what artifice one colour is a
foil to its neighbour. He looks close into the tints, of what
colours they are composed, till he has formed clear and distinct
ideas, and has learnt to see in what harmony and good co louring
consists. What is learnt in this manner from the works of others
becomes really our own, sinks deep, and is never forgotten; nay, it
is by seizing on this clue that we proceed forward, and get further
and further in enlarging the principle and improving the practice.
There can be no doubt but the art is better learnt from the works

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