A fool takes in all the lumber of every sort that he comes across, so that the knowledge which might be useful to him gets crowded out, or at best is jumbled up with a lot of other things so that he has a difficulty in laying his hands upon it.
 Arthur Conan Doyle, A Study in Scarlet (1887). copy citation

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Author Arthur Conan Doyle
Source A Study in Scarlet
Topic difficulty crowd
Date 1887
Language English
Reference
Note
Weblink http://www.gutenberg.org/files/244/244-h/244-h.htm

Context

““ Now that I do know it I shall do my best to forget it. ” “ To forget it! ” “ You see, ” he explained, “ 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. A fool takes in all the lumber of every sort that he comes across, so that the knowledge which might be useful to him gets crowded out, or at best is jumbled up with a lot of other things so that he has a difficulty in laying his hands upon it. Now the skilful workman is very careful indeed as to what he takes into his brain-attic. He will have nothing but the tools which may help him in doing his work, but of these he has a large assortment, and all in the most perfect order.” source