Literature is full of examples of remarkable cures through the influence of the imagination, which is only an active phase of faith. - William Osler

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.

One special advantage of the skeptical attitude of mind is that a man is never vexed to find that after all he has been in the wrong.

Surrounded by people who demand certainty, — and not philosopher enough to agree with Locke that "Probability supplies the defect of our knowledge and guides us when that fails, and is always conversant about things of which we have no certainty," the practitioner too often gets into a habit of mind which resents the thought that opinion, not full knowledge, must be his stay and prop. There is no discredit, though there is at times much discomfort, in this everlasting perhaps with which we have to preface so much connected with the practice of our art. It is, as I said, inherent in the subject.