I sort of travel in different mathematical circles...

Harlan

Our relationship is predicated on one Holmes and one Watson. It's a delicate homeostasis. It doesn't function properly if there are two Holmeses and no Watsons. So while I am sensitive to this is likely a ripple effect from the tragedy, turning yourself into me in response is not good for our partnership.

Sherlock

In the wrong hands, math can be manipulated, abused. I decided to do something about it. You catch people who murder other people. I catch people who murder math.

Harlan

Sherlock: Your home, Watson, is utterly pleasant.
Joan: You say that like it's a bad thing.
Sherlock: When you told me you wanted a life of your own, I didn't realize you meant you wanted the same life everyone else has ... anyway, it's none of my business.

Sherlock: Enjoy yourself, Watson.
Joan: I'll try, Holmes.

So in other words, you think Species was killed by Species.

Watson

Joan: Joey wrote me a letter, telling me it wasn't my fault and that he forgave me.
Sherlock: This isn't the first time he's asking you for money.
Joan: He needed a car...

I don't think you should help her again. She is what she is. She wants what she wants. I love her but I love this job, too. The people who do it. She's got to do better.

Gregson

Finn: At one time almost every great religion has been attacked as a cult.
Sherlock: So have most cults.

This is my sanctum sanatorium, did you honestly believe their wouldn't be any security measures?

Sherlock

I prefer police contact me through my lawyer, not my dentist

Janko Stepovic

Watson seems adequately sexed.

Sherlock

Elementary Quotes

Holmes: Why do you suppose you hate your job so much?
Watson: I don't hate my job.
Holmes: You have two alarm clocks. No one with two alarm clocks loves their job. Two alarm clocks mean it's a chore for you to get up in the morning.

Watson: How do you do it, guess things?
Sherlock: I observe and then I deduce.
Watson: How did you know I was a doctor, you said you could tell from my hands.
Sherlock: Hand, singular. It was soft no calluses.
Watson: How did you know my father had an affair?
Sherlock: Google. Not everything is deducible.