1. "Elementary, my dear Watson." This quote is often attributed to Sherlock Holmes, but it never actually appears in any of the original Conan Doyle stories. However, it is so widely associated with the character that it has become iconic.
2. "Data! Data! Data! I can't make bricks without clay." This quote comes from the story "The Adventure of the Copper Beeches" and highlights Holmes' reliance on meticulous observation and evidence gathering in his deductions.
3. "It has long been an axiom of mine that the little things are infinitely the most important." This quote comes from the story "The Adventure of the Blue Carbuncle" and showcases Holmes' belief that seemingly insignificant details often hold the key to solving mysteries.