Very sorry to knock you up, Watson,' said he [Holmes], 'but it is a common lot this morning. Mrs Hudson has been knocked up, she retorted upon me, an… - Arthur Conan Doyle

To Sherlock Holmes she is always the woman. I have seldom heard him mention her under any other name. In his eyes she eclipses and predominates the whole of her sex. It was not that he felt any emotion akin to love for Irene Adler. All emotions, and that one particularly, were abhorrent to his cold, precise but admirably balanced mind. He was, I take it, the most perfect reasoning and observing machine that the world has seen, but as a lover he would have placed himself in a false position. He never spoke of the softer passions, save with a gibe and a sneer. They were admirable things for the observer — excellent for drawing the veil from men’s motives and actions. But for the trained

"... but it is better to learn wisdom late than never to learn it at all." - Sherlock Holmes

It is a capital mistake to theorize before you have all the evidence. It biases the judgment.