30 years ago, we all had two ages. How old we are and
how old we look. How old we look is usually ten years younger than how old we
are.
20 years ago, we added a third age, how old we feel,
because more often than not, due to the lifestyles we live, how old we feel is
actually ten years older than how old we are.
10 years ago, I've added a fourth age, how old we act.
How old we act is now 10 years younger than how old we look, which is ten years
younger than how old we are, which is ten years younger than how old we feel.