Rudyard Kipling in If, which I believe is the best poem ever written begins, "If you can keep your head when all about you are losing theirs and blaming it on you," setting the stage for a recitation for the human qualities needed to rise above circumstances. These are the types of mature actions and reactions visible when the shifting tides of daily life don't toss us about like a piece of driftwood in the surf. Maturity provides stability and confidence not shaken by the ebb and flow of change marking the boundaries of life.