He proved tweed isn't bulletproof! You must be proud.

Bell

In what universe are these people not all dead of cancer?

Sherlock [about superheroes' origin stories]

The flesh-and-blood Midnight Ranger was shot dead last night. Unfortunately, the bullets used were not radioactive, so he'll be remaining quite dead.

Sherlock

It's pretty hard to say no to someone who just donated a quarter of a million dollars to a charity I care about. But that was the whole point, right?

Joan

Sherlock: It occurred to me that our Ranger might've been killed by an obsessed fan attempting to recreate a particular death.
Joan: And?
Sherlock: Unfortunately, the deaths in the comics involve being sent back in time, buried underground, made microscopic, impersonated by an alien, and in my particular favorite demise, pushed over a waterfall, locked in the embrace of his nemesis.

Ben Garrett: How do you do all that?
Sherlock: I was bitten by a radioactive detective.

I was just marveling at how you were able to sleep so soundly last night given the incessant sex noise.

Sherlock

Perhaps it entered your mind subconsciously. Were your dreams filled with two flounders slapping together? A ketchup bottle being squeezed repeatedly whilst a nearby walrus issues a death rattle?

Sherlock [to Joan, on the neighbor's noisy sex]

So they didn't commit a murder so much as provide you with a murder-tunity.

Sherlock

There are two things you should know, Mr. Springer. First is I'm gonna punch you in the face. [punches him in the face] Second is that we'll take your case.

Sherlock

If you're keen on spending eternity buried alive with a group so narcissistic they think outliving humanity is a good idea, I'd rather melt with the masses and get it over with, wouldn't you?

Sherlock

Sherlock: We've been taking things slow.
Joan: ...You haven't had sex yet.
Sherlock: We have not.

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.