Mediocrity knows nothing higher than itself, but talent instantly recognizes genius.
I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose.
Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones.
It is not that I think or believe, but that I know.
When a doctor does go wrong he is the first of criminals. He has nerve and he has knowledge.
"I should have more faith," he said; "I ought to know by this time that when a fact appears opposed to a long train of deductions it invariably proves to be capable of bearing some other interpretation."
If the fresh facts come to our knowledge all fit themselves into the scheme, then our hypothesis may gradually become a solution. Sherlock Holmes speaking with Dr. Watson.
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