There is contagion in good health and sound morals, when daily illustrated, no less than in courage and fear. No physician can be at his best in the rooms of the sick if he be under any bondage from disease or habit.
"Physician, heal thyself!" Physician, how does it happen that you have need to be healed, and of what worth are you if you can neither prevent disease nor cure yourself with your dosings? What availeth it to a man to talk righteously when virtue is not in him?
Ailings, habits blunt all the special senses and the finer instincts and tastes, and impair the power to reason clearly, to infer correctly, to conclude wisely. Only the well have that hopefulness that comes from power in reserve, power that is not wasted through acquired disease and acquired habits. The contagion of health is a power no less than courage or fear.
That man, self-poised, void of fear, General Grant, crushed the Rebellion with a single sentence, "I will fight it out on this line if it takes all summer." That sentence made every man in his army a Grant in courage and confidence. Grant in his prime could puff his cigar while commanding all the armies of his country; but the cigar ultimately destroyed his life, and there was no physician to interpose to prevent one of the most torturing of deaths.
Where is the logic of the sick trying to heal the sick? This question will be more frequently asked in that time to come when the drug-store annex to the sick-room will be much smaller than is now thought necessary.
Human expression is studied in the rooms of the sick as nowhere else; and if the lines are not obscured by the fogs and clouds of disease the signs can be much more clearly distinguished.
A man is now under my care whose soul is of the largest mould, and who is so supremely endowed by reason of intellect, varied tastes and acquirements, as to make life on earth well worth living. His long chronic local ailment has not impaired his power to read me for signs of hope as it seems to me I have never been read before; and never before have I so felt the need to enter a room of the sick with a larger stock of general health. For the time I seem to him to be holding before his eyes the keys of life or death.
The physician should be able to go into the room of the sick to see with clearest vision whatever is revealed to the natural eye; and no less to see with eyes of understanding that he may be an interpreter of conditions that indicate recovery or death. He is the historian of disease, and therefore before he can write he must see clearly all that can be known about the process of cure as revealed by symptoms.
The eye is at its best only in perfect health no less than the reason, the judgment, and the spirits. A few years ago a drouth of many weeks occurred; in some meadows and pastures the grass seemed dead, beyond the possibility of growth. Every shade of the green had departed; but warm rains came, and in a few days there was a green carpet plush-like in its softness and delicacy.
So the progress of cure may be read on the tongue, on the skin, in the eyes, where there are both eyesight and insight to see and to study.