Installing A Love of learning
Self Determination Theory can explain people that have a love of learning. They have a mastery of gaining mastery. And using that mastery satisfies Competence and Autonomy.
When adult,who have developed the dissatisfaction of incompetence(Children don't mind being incompetent at something. Adults actively avoid it.), with out that mastery is having trouble feel frustrated. People with that mastery feel excited, it is a chance to experience their mastery.
So it should be easy to instill a love of learning in children, just teach them how to learn.