"Mom loved to write to my sister and me," H. Jackson Brown writes.  "They began when I was an eight-year old camper away from home for the first time.  When I opened Mom's letter, I would always read the P.S. first.  I just couldn't wait to discover what revelations, humor, observations, admonitions, and encouragement she wanted to share with me." "No matter how hard you hug your money, it never hugs you back," says one P.S.  "Middle age is when you have two choices and you choose the one that gets you home earlier, " says another.  Jack Brown's mother shared valuable advice with him about the issues of wisdom, hope, humor, and faith.  "Although some were written more than thirty years ago," Brown says, "they still run with truth and insight."