Siddhartha left the palace at the age of 29 to go and explore the world.
Firstly Siddhartha came to an old beggar with long grey hair and no teeth who was almost blind. after seeing the beggar Siddhartha realised that not everyone has a home or a family.
Secondly Siddhartha came across a sick man who was struggling to breathe and had purple patches all over his skin. Seeing this make Siddhartha aware that lots of people are in pain because of sickness and disease.
Next Siddhartha came across lots of people crying around a bonfire with a body on it. This made Siddhartha realise that people don't live for ever and that people are always there to support you.
Lastly Siddhartha found a spiritual and holy person, a monk who looked like he was at peace with the world and Siddhartha was inspired by the monk.
One day when he was meditating under a tree he began to understand the meaning of life.