Understanding is more important than memorization! Schools should teach the students how to understand, think, doubt, and question. They should be made open to imagination and creativity.
Nobody ever figures out what life is all about, and it doesn’ t matter. Explore the world, nearly everything is really interesting when you go into it deeply enough. Work as hard and as much as you want to on the things you like to do the best. Don’t think about what you want to be but what you want to do. Keep up a minimum with other things so that society doesn’t stop you from doing anything at all.