(At the request of JustUWait221)
Sir Arthur Conan Doyle, the author known for his famous series: Sherlock Holmes
*No shit Sherlock* 

"When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth." 

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"It is a great thing to start life with a small number of really good books which are your very own." 

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"You see, but you do not observe." 

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"You have a grand gift for silence, Watson. It makes you quite invaluable as a companion."

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"A dog reflects the family life. Whoever saw a frisky dog in a gloomy family, or a sad dog in a happy one? Snarling people have snarling dogs, dangerous people have dangerous ones." 

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"Crime is common. Logic is rare. Therefore it is upon the logic rather than upon the crime that you should dwell."

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"Watson. Come at once if convenient. If inconvenient, come all the same."