It is easier to be a success than to raise a successor!
“Nothing that I had worked for and earned meant a thing to me, because I knew that I would have to leave it to my successor, and he might be wise, or he might be foolish—who knows? Yet he will own everything I have worked for, everything my wisdom has earned for me in this world. It is all useless.” Eccl. 2: 18-19 (GNB). Read 18-21.
Lesson: People concentrate their attention to succeed and to retain success rather than care much for the successor whether he is a wise or foolish son. Our efforts should be more to raise a good successor.