There are always loose ends in real life.

There you go, Harry!” Ron shouted over the noise. “You weren’t being thick after all — you were showing moral fiber!

When you have seen as much of life as I have, you will not underestimate the power of obsessive love.

You are determined to hate him [Snape], Harry,” said Lupin with a faint smile. “And I understand; with James as your father, with Sirius as your godfather, you have inherited an old prejudice. By all means tell Dumbledore what you have told Arthur and me, but do not expect him to share your view of the matter; do not even expect him to be surprised by what you tell him. It might have been on Dumbledore’s orders that Severus questioned Draco.

I can teach you how to bottle fame, brew glory, even put a stopper on death.

I sometimes find, and I am sure you know the feeling, that I simply have too many thoughts and memories crammed into my mind. “At these times, I use the Pensieve. One simply siphons the excess thoughts from one’s mind, pours them into the basin, and examines them at one’s leisure. It becomes easier to spot patterns and links, you understand, when they are in this form.

But Colin's only understanding of love was of limitless loyalty, boundless tolerance.