Each of us is born with two contradictory sets of instructions: a conservative tendency, made up of instincts for self-preservation, self-aggrandizement, and saving energy, and an expansive tendency made up of instincts for exploring, for enjoying novelty and risk-the curiosity that leads to creativity belongs to this set. But whereas the first tendency requires little encouragement or support from outside to motivate behaviour, the second can wilt if not cultivated.