The quote is consistent with the scientific method.
Work Step by Step
The scientific method is based on these major steps: observation, hypothesis, and experimentation. The treatment of an ill patient embodies this approach as outlined in the quote by Paracelsus. The doctor observes the symptoms exhibited by the patient. Then, to answer the question of why the patient is sick, the doctor hypothesizes which ailment could be responsible for all of the symptoms observed in the patient. Finally, the treatment the doctor decides to administer to the patient is a form of experimentation. If the treatment heals the patient, this is a successful experiment. If it does not heal the patient, it is necessary to form a new hypothesis and go through the cycle again until the patient is healed.