It is a capital mistake to theorize before one has data. 
											   
												  
													  SIR ARTHUR CONAN DOYLE, The Adventures of Sherlock Holmes 
											       
												  
													  A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber-room of his library, where he can get it if he wants it. 
											       
												  
													  SIR ARTHUR CONAN DOYLE, The Adventures of Sherlock Holmes 
											       
												  
													  Mediocrity knows nothing higher than itself, but talent instantly recognizes genius. 
											       
												  
													  SIR ARTHUR CONAN DOYLE, The Valley of Fear 
											       
												  
													  Of all ghosts, the ghosts of our old loves are the worst. 
											       
												  
													  SIR ARTHUR CONAN DOYLE, The Memoirs of Sherlock Holmes 
											       
												  
													  I have seen too much not to know that the impression of a woman may be more valuable than the conclusion of an analytical reasoner. 
											       
												  
													  SIR ARTHUR CONAN DOYLE, The Adventures of Sherlock Holmes 
											       
												  
													  It has long been an axiom of mine that the little things are infinitely the most important. 
											       
												  
													  SIR ARTHUR CONAN DOYLE, The Adventures of Sherlock Holmes 
											       
												  
													  When you have eliminated the impossible, whatever remains, however improbable, must be the truth. 
											       
												  
													  SIR ARTHUR CONAN DOYLE, The Sign of Four 
											       
												  
													  Violence does, in truth, recoil upon the violent, and the schemer falls into the pit which he digs for another. 
											       
												  
													  SIR ARTHUR CONAN DOYLE, The Adventures of Sherlock Holmes 
											       
												  
													  
														  From a drop of water a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other. 
												       
													  
														  SIR ARTHUR CONAN DOYLE, A Study in Scarlet 
												       
													  
														  Our highest assurance of the goodness of Providence seems to me to rest in the flowers. All other things, our powers, our desires, our food, are all really necessary for our existence in the first instance. But this rose is an extra. Its smell and its color are an embellishment of life, not a condition of it. It is only goodness which gives extras, and so I say again that we have much to hope from the flowers. 
												       
													  
														  SIR ARTHUR CONAN DOYLE, The Naval Treaty 
												       
													  It’s every man’s business to see justice done. 
											       
												  
													  SIR ARTHUR CONAN DOYLE, The Memoirs of Sherlock Holmes 
											       
												  
													  I cannot agree with those who rank modesty among the virtues. To the logician all things should be seen exactly as they are, and to underestimate one's self is as much a departure from truth as to exaggerate one's own powers. 
													  ARTHUR CONAN DOYLE, "The Adventure of the Greek Interpreter", The Adventures of Sherlock Holmes 
													  You have a grand gift for silence, Watson. It makes you quite invaluable as a companion. 
													  ARTHUR CONAN DOYLE, The Complete Sherlock Holmes 
													  It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. 
													  ARTHUR CONAN DOYLE, A Scandal in Bohemia 
													  There is nothing more deceptive than an obvious fact. 
													  ARTHUR CONAN DOYLE, The Boscombe Valley Mystery 
													  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. 
													  ARTHUR CONAN DOYLE, A Study in Scarlet 
													  It is easy to be wise after the event. 
													  ARTHUR CONAN DOYLE, The Complete Sherlock Holmes 
													  London, that great cesspool into which all the loungers and idlers of the Empire are irresistibly drained.  
											       
												  
													  SIR ARTHUR CONAN DOYLE, A Study in Scarlet 
											       													  
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