Intellectual refinement's one thing. Moral refinement's something different.
Intelligence is a very valuable thing, innit, my friend? And usually it comes far too fucking late.
I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
— Do you think I'm an idiot?
— No, I'd say you possess above-average intelligence.
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
Smarter we get, the more dangerous our world becomes.
— That takes me back. "Don't be smart, Sherlock, I'm the smart one."
— I am the smart one.
— I used to think I was an idiot.
— Both of us thought you were an idiot, Sherlock.