Probably some kind of gun safety lesson to be gleaned here.

This Sunday evening, The Walking Dead returns to AMC to begin its fifth season. In the coming weeks—as we watch Rick Grimes, Daryl Dixon, Michonne and the rest of their band of beaten-down survivors trudge through a world full of death while acting kind of like actual human beings—we're certain to learn a lot about not just their world, but our world.

In the past four seasons, we've already received so many valuable life lessons. Here are just seven of the more profound ones: