Your life depends on your brain. To be the ethical, engaged, creative, successful, and lively human being you intend to be, you need your brain. You need your brain and you also need to use your brain. It is not enough to possess a perfectly good brain—you must also use it.
There are various developmental theories that go into the tool kit that parents and educators utilize to help mold caring and ethically intact people, including those of Swiss psychologist Jean Piaget and American psychologist Lawrence Kohlberg.