Based on their Financial Times Weekend column, philosopher Julian Baggini and his psychotherapist partner Antonia Macaro offer intriguing answers to life's questions. Can infidelity be good for you? What does it mean to stay true to yourself? Must we fulfil our potential? Self-help with a distinctly cerebral edge, the shrink and the sage - aka Julian Baggini and Antonia Macaro - have been dispensing advice through their FT column since October 2010...