There is no more difficult art to acquire than the art of observation, and for some men it is quite as difficult to record an observation in brief and plain language.
No human being is constituted to know the truth, the whole truth, and nothing but the truth; and even the best of men must be content with fragments, with partial glimpses, never the full fruition.
There are, in truth, no specialties in medicine, since to know fully many of the most important diseases a man must be familiar with their manifestations in many organs.
