Abbreviators do harm to knowledge and to love, seeing that the love
of any thing is the offspring of this knowledge, the love being the
more fervent in proportion as the knowledge is more certain. And
this certainty is born of a complete knowledge of all the parts,
which, when combined, compose the totality of the thing which ought
to be loved. Of what use then is he who abridges the details of
those matters of which he professes to give thorough information,
while he leaves behind the chief part of the things of which the
whole is composed? It is true that impatience, the mother of
stupidity, praises brevity, as if such persons had not life long
enough to serve them to acquire a complete knowledge of one single
subject, such as the human body; and then they want to comprehend
the mind of God in which the universe is included, weighing it
minutely and mincing it into infinite parts, as if they had to
dissect it!

Oh! human stupidity, do you not perceive that, though you have been
with yourself all your life, you are not yet aware of the thing you
possess most of, that is of your folly? and then, with the crowd of
sophists, you deceive yourselves and others, despising the
mathematical sciences, in which truth dwells and the knowledge of
the things included in them. And then you occupy yourself with
miracles, and write that you possess information of those things of
which the human mind is incapable and which cannot be proved by any
instance from nature. And you fancy you have wrought miracles when
you spoil a work of some speculative mind, and do not perceive that
you are falling into the same error as that of a man who strips a
tree of the ornament of its branches covered with leaves mingled
with the scented blossoms or fruit....... [Footnote 48: _Givstino_,
Marcus Junianus Justinus, a Roman historian of the second century,
who compiled an epitome from the general history written by Trogus
Pompeius, who lived in the time of Augustus. The work of the latter
writer no longer exist.] as Justinus did, in abridging the histories
written by Trogus Pompeius, who had written in an ornate style all
the worthy deeds of his forefathers, full of the most admirable and
ornamental passages; and so composed a bald work worthy only of
those impatient spirits, who fancy they are losing as much time as
that which they employ usefully in studying the works of nature and
the deeds of men. But these may remain in company of beasts; among
their associates should be dogs and other animals full of rapine and
they may hunt with them after...., and then follow helpless beasts,
which in time of great snows come near to your houses asking alms as
from their master....

On spirits (1211--1213).