For example we do not think of Phosphoric acid for excitable, or Coffee for lethargic patients, unless the individualistic symptoms call for these remedies in the most positive way, an unlikely contingency. The quality of the general reaction greatly influences symptom values, be they pathogenetic or clinical.
In a new proving each prover reacts to only a part of the perspective picture, and we properly sense the whole only by seeing all the parts as a compound unit, exactly as we see it in disease, the arrangement never being precisely the same, in either case.
The interrelation of effects always brings out a certain demeanor or general reaction. It is nature picturing forth her demands in the oldest and most flexible to languages, than can be thoroughly understood only by also taking fully into account the context.
The whole trend of education leaned more and more toward fixity, until first Madame Curie and then Einstein demonstrated the essential fallacy of such a position. In this connection I would call your attention to Hahnemann, his philosophy and his materia medica, in the practical application of which fixedness is reduced to the observation of certain natural working rules which underlie successful medical practice and that these are essentially of a flexible nature.