Ireland is such a young society. The British were the ruling class up until they left about a hundred years ago, and we've been trying to work out what our class hierarchy is ever since.

For a moment, I felt as if the universe had turned upside down and we were falling softly into an enormous black bowl of stars, and I knew, beyond any doubt, that everything was going to be alright.

Time works so hard for us, if only we can let it.

If you're writing a scene for a character with whom you disagree in every way, you still need to show how that character is absolutely justified in his or her own mind, or the scene will come across as being about the author's views rather than about the character's.

What I warn you to remember is that I am a detective. Our relationship with truth is fundamental but cracked, refracting confusingly like fragmented glass. It is the core of our careers, the endgame of every move we make, and we pursue it with strategies painstakingly constructed of lies and concealment and every variation on deception.

Don't get discouraged if you're hammering away at a sentence or a paragraph or a chapter, and it keeps coming out wrong. You're allowed to get it wrong, as many times as you need to; you only need to get it right once.

People you knew when you were teenagers, the ones who saw your stupidest haircut and the most embarrassing things you've done in your life, and they still cared about you after all that: they're not replaceable, you know?