- Guardian Unlimited Science
- 22/8/6 14:00
Cheerfulness can boost your energy levels, even in tough times – as philosophers and writers have long recognised“The surest sign of wisdom is a constant cheerfulness,” wrote the French philosopher Michel de Montaigne in the 16th century. “Be cheerful,” commands Prospero – arguably the wisest of all of Shakepeare’s characters – in The Tempest. Yet the impact of cheerfulness – and...