My take on these 4 stages is that activism is a way of life, not a stage oflife.
Hinduism.
The Four Stages of LifeHinduism recognizes four main stages of life. Like the goals of life, these canbe divided into three plus one, with the three deriving from the "life isgood" strand of Hinduism, and the one deriving from the "life is bad"strand. The first three are the student, the householder, and the retiredperson, while the fourth is the ascetic (also known as a sannyasin or asadhu).
Chinese.
For thousands of years Chinese society based their collective ethic on fourdistinct stages of life.1. 0 - 21 - years Student2. 21 - 42 - years State Servant/Steward3. 42 - 63 - years Parent/Mastership/Home estate4. 63 - 84 - years Retirement/Sage/Adviser