The natural man has only two primal passions, to get and to beget.
In seeking absolute truth we aim at the unattainable and must be content with broken portions.
The teacher’s life should have three periods, study until twenty-five, investigation until forty, profession until sixty, at which age I would have him retired on a double allowance.
The philosophies of one age have become the absurdities of the next, and the foolishness of yesterday has become the wisdom of tomorrow.
The desire to take medicine is perhaps the greatest feature which distinguishes man from animals.
The first duties of the physician is to educate the masses not to take medicine.
The future is today.
It is much simpler to buy books than to read them and easier to read them than to absorb their contents.
There are, in truth, no specialties in medicine, since to know fully many of the most important diseases a man must be familiar with their manifestations in many organs.
There is no disease more conducive to clinical humility than aneurysm of the aorta.
The greater the ignorance the greater the dogmatism.
Look wise, say nothing, and grunt. Speech was given to conceal thought.
Variability is the law of life, and as no two faces are the same, so no two bodies are alike, and no two individuals react alike and behave alike under the abnormal conditions which we know as disease.
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.
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.