Charles Murray teaches us in his new book, “Coming Apart,” that one of the great secrets of the successful upper class is its dedicated practice of traditional family values. Men and women who get married, stay married and have children within marriage are more likely to be in, and to stay in, the middle or upper class. There are exceptions: there are some great and successful single parents and some awful two parent families, but most of the time it works best with, yes, a mother, a father and children. The upper classes -- liberal and conservative, Democrat and Republican alike -- believe this and practice it. Sadly, they do not often preach what they practice.