Andre Gide wrote, ''Everything has been said before, but since nobody
listens we have to keep going back and beginning all over again.'' To
a certain extent, that statement applies to the importance of accurate
and systematic history taking and physical examination in clinical pr
actice. Although we are trained in habits of comprehension and accurac
y in history taking and examination of patients, periodic reminders ar
e required to develop a diagnostic framework based on observation (ins
pection), palpation, percussion, and auscultation. This monograph reem
phasizes the method to be pursued in the treatment of a patient with p
ulmonary symptoms. It consists of three parts: (1) questioning the pat
ient about his or her medical history; (2) performing the physical exa
mination of the respiratory system; and (3) examining the extrapulmona
ry signs and symptoms. Once a strong clinical framework has been const
ructed, its further development and refinement depend on the clinician
's experience, power of observation, and systematic reading of the med
ical literature. Good physicians must continue to learn throughout the
ir careers; this is the most essential element of a physician's develo
pment. Be patient, however; as Cowper said, ''Knowledge, to become Wis
dom, needs experience.''