The wise are, first and foremost, ‘realistic’ about how challenging many things can be. They aren’t devoid of hope (that would be a folly of its own), but they are conscious of the complexities entailed in any project: for example, raising a child, starting a business, spending an agreeable weekend with the family, changing the nation, falling in love… Knowing that something difficult is being attempted doesn’t rob the wise of ambitions, but it makes them more steadfast, calmer and less prone to panic about the problems that will invariably come their way.