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Stages of Human Existence

• Pythagoras was not only a mathematician but also a philosopher.

• According to this theory, each stage lasts 20 years.

• The first stage is like spring when nature is starting to wake up.

• A child gets their name, learns to talk, goes to school to learn to read and write.

• A teenager chooses a profession, then, finishes college and sometimes university.

• During the next stage, an adult often gets married and has their own children.

• He is full of energy.

• They start to rethink their lives and achievements.

• After retiring, it comes another age which is like winter.

• But, I think, everything depends on a personality.

• Sometimes some teenagers feel like old people and there are old people full of joy and energy.