The next higher level is to work, fight, and sometimes die for your own immediate family. This is the level at which six pounds of mother cat can be so fierce that she'll drive off a police dog. It is the level at which a father takes a moonlighting job to keep his kids in college — and the level at which a mother or father dives into a flood to save a drowning child ... and it is still moral behavior even when it fails.
Robert A. Heinlein