and a special proneness to fad and prejudice, we realize how
practically helpful are such exact studies of metabolism."(13)

(13) Frederick S. Lee, Ph.D.: Scientific Features of Modern
Medicine, New York, 1911. I would like to call attention to this
work of Professor Lee's as presenting all the scientific features
of modern medicine in a way admirably adapted for anyone, lay or
medical, who wishes to get a clear sketch of them.

CHAPTER VI -- THE RISE OF PREVENTIVE MEDICINE

THE story so far has been of men and of movements--of men who have,
consciously or unconsciously, initiated great movements, and of
movements by which, nolens volens, the men of the time were moulded and
controlled. Hippocrates, in the tractate on "Ancient Medicine," has a
splendid paragraph on the attitude of mind towards the men of the past.
My attention was called to it one day in the Roman Forum by Commendatore
Boni, who quoted it as one of the great sayings of antiquity. Here it
is: "But on that account, I say, we ought not to reject the ancient Art,
as if it were not, and had not been properly founded, because it did
not attain accuracy in all things, but rather, since it is capable of
reaching to the greatest exactitude by reasoning, to receive it and
admire its discoveries, made from a state of great ignorance, and as
having been well and properly made, and not from chance."(1)

(1) The Works of Hippocrates, Adams, Vol. I, p. 168, London, 1849
(Sydenham Society).

I have tried to tell you what the best of these men in successive ages
knew, to show you their point of outlook on the things that interest
us. To understand the old writers one must see as they saw, feel as they
felt, believe as they believed--and this is hard, indeed impossible! We
may get near them by asking the Spirit of the Age in which they lived
to enter in and dwell with us, but it does not always come. Literary
criticism is not literary history--we have no use here for the former,
but to analyze his writings is to get as far as we can behind the
doors of a man's mind, to know and appraise his knowledge, not from our
standpoint, but from that of his contemporaries, his predecessors and
his immediate successors. Each generation has its own problems to face,
looks at truth from a special focus and does not see quite the same
outlines as any other. For example, men of the present generation
grow up under influences very different