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.
To study the phenomena of disease without books is to sail an uncharted sea, while to study books without patients is not to go to sea at all.
The philosophies of one age have become the absurdities of the next, and the foolishness of yesterday has become the wisdom of tomorrow.
To have striven, to have made the effort, to have been true to certain ideals - this alone is worth the struggle.
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.