If you get stuck, get away from your desk. Take a walk, take a bath, go to sleep, make a pie, draw, listen to music, meditate, exercise; whatever you do, don’t just stick there scowling at the problem. But don’t make telephone calls or go to a party; if you do, other people’s words will pour in where your lost words should be.

Hilary Mantel (1952 – ), English writer and the first woman to win The Booker Prize twice

One of my mantras is: learn to fail or fail to learn.

Tal Ben Shahar (1970 – ), American and Israeli psychologist, working in the areas of positive psychology and leadership

Let workers nap after lunch to boost creativity, urges academic. Bosses should let their staff take naps at work, as sleeping for 30 to 90 minutes in the afternoon can improve creativity, a leading brain researcher claims.

The Daily Telegraph report on a speech last week to the Cheltenham Science Festival by Vincent Walsh, professor of human brain research at University College London

Good things, when short, are twice as good.

Tom Stoppard (1937 – ), British playwright