His research interests centre on several issues in ethics: well-being and the good life, moral evil, and the virtues. He has worked primarily on happiness since 1995. He is the author of The Pursuit of Unhappiness (OUP, 2008). He has also published a number of articles on happiness. Happiness: A Very Short Introduction Daniel M. Haybron Very Short Introductions Reviews and Awards "Welcome and erudite" - Huffington Post "[T]he book is interesting, well-written and well-argued." - GrrlScientist, The Guardian "excellent" - David Lorimer, Network REview