Good people

Reality checks are the measure of maturity.  Not just getting older, but truly coming into full being.

Everything gets older, but some things become better as they age, good wine, good cheese, people!

A good person has an aroma, a tang, a million layers of interesting flavors that speak of a life well lived, choices well made, time well spent.

Some mature early, some later and some not at all.

A robust maturity has less to do with years than it does a healthy curiosity, a willingness to see things from all sides, a sense of humor, an ability to roll with the punches and a knack for making the best of whatever is.
 
In the real world some people mature as early as five and some never, but you can't miss them.  They draw people to them like moths to a flame.  With apparently endless energy they try to pull everyone into the warmth and light that emanates from the very center of their being.