He doubted her. You must never doubt the one you love. But they might not be telling the truth. Never mind that. You tell them the truth. What do you mean? You can't be another person's honesty, child, but you can be your own. So what should I say? When? When I love someone? You should say it.

Great control and great discipline are necessary when you reach your own editing stage of the book, but in the early stages you have to be prepared to let anything happen and to get it wrong or go off track. The development of a character is not smooth or simple - it is as tricky as meeting someone new whom you would like to know better.

The unknownness of my needs frightens me. I do now know how huge they are, or how high they are, I only know that they are not being met. If you want to find out the circumference of an oil drop, you can use lycopodium powder. That’s what I’ll find. A tub of lycopodium powder, and I will sprinkle it on to my needs and find out how large they are. Then when I meet someone I can write up the experiment and show them what they have to take on.

reading is not a passive act. It's a creative act. It's a relationship between the writer and a person the writer will probably never meet. I think it's very wrong to write in a way that leaves no room for the reader to maneuver. I don't want to get in the way. What I'd really like to do is to perform the Indian Rope Trick - go higher and higher and eventually disappear.

Whoever it is you fall in love with for the first time, not just love but be in love with, is the one who will always make you angry, the one you can't be logical about.

The Humans is a laugh-and-cry book. Troubling, thrilling, puzzling, believable and impossible. Matt Haig uses words like a tin-opener. We are the tin.

Your weak point is the open, vulnerable place where you can always be hurt. Love, in all its aspects, opens the self so fully.