These dialog was held when Irene Adler pretend to die, but both Sherlock and Mycroft Holmes believed that Irene truly died..
Sherlock Holmes: Look at them. They all care so much. Do you ever wonder if there’s something wrong with us?
Mycroft Holmes: All lives end. All hearts are broken. Caring is not an advantage, Sherlock.
Sherlock Holmes: This is low tar.
Mycroft Holmes: Well, you barely knew her.
Well, no one know others perfectly 🙂
Shakira – Whenever wherever