Answer:
- The infant.
- The schoolboy.
- The teenager.
- Young adulthood.
- Middle age.
- Old man.
- Death.
Explanation:
The infant is identified as the baby that cries in the nurse's arms and is helpless, it needs the help of a grown-up to survive.
The schoolboy is the little boy that has to attend school and is not happy about it.
The teenager is the lover that is helplessly in love with a girl.
The young man is the soldier who is fearless, bold and is ready to fight.
The middle-aged man is an experienced man that has acquired knowledge, he is wise and likes to share his knowledge.
The old man is not someone that can influence the young generations any more, he wears glasses and his physical appearance has changed.
The man that is about to die is the last act, he is a helpless infant again.