“Certain s and physicians say that it is not possible for any one to know medicine who does not know what man is”
Ancient Medicine
Context: Certain s and physicians say that it is not possible for any one to know medicine who does not know what man is, and that who ever would cure men properly, must learn this in the first place. But this saying rather appertains to philosophy, as Empedocles and certain others have described what man in his origin is, and how he first was made and constructed. But I think whatever such has been said or written by sophist or physician concerning nature has less connexion with the art of medicine than with the art of painting. And I think that one cannot know anything certain respecting nature from any other quarter than from medicine... Wherefore it appears to me necessary to every physician to be skilled in nature, and strive to know... what man is in relation to the articles of food and drink, and to his other occupations, and what are the effects of each of them to every one.<!--pp. 174-175
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Hippocrates 33
ancient Greek physician -460–-370 BCRelated quotes

“One of the first duties of the physician is to educate the masses not to take medicine.”
Source: Sir William Osler : Aphorisms (1961), p. 105.

Therefore, in order to do even a little, one has already to know a great deal and to know it well.
Source: Precepts and Judgments (1919), p. 175

Source: How to Read a Book: The Classic Guide to Intelligent Reading

Source: Precepts and Judgments (1919), p. 175

Prior to The Battle of East and West: Ricky Hatton vs. Manny Pacquiao
As quoted in "Pacquiao-Hatton Worthy of Grand Setting" http://sports.yahoo.com/box/news?slug=ro-pachat033109 Yahoo! Sports (2009-03-31)

Encountering Directors interview (1969)
Context: When a scene is being shot, it is very difficult to know what one wants it to say, and even if one does know, there is always a difference between what one has in mind and the result on film. I never think ahead of the shot I'm going to make the following day because if I did, I'd only produce a bad imitation of the original image in my mind. So what you see on the screen doesn't represent my exact meaning, but only my possibilities of expression, with all the limitations implied in that phrase. Perhaps the scene reveals my incapacity to do better; perhaps I felt subconsciously ironic toward it. But it is on film; the rest is up to you.