David Gillespie is a recovering corporate lawyer, former co-founder of a successful software company, investor in several software startups and best-selling author. His book ‘Taming Toxic People’ is a practical guide to restraining the difficult person in your life, be it your boss, your spouse or a parent. It is also a serious and meticulously researched warning if we value a free and well-functioning society: if we don’t understand and act to manage psychopathic behaviour, Trump is only the beginning.