At this stage people were neither happy nor unhappy, they just existed. People were different from animals because they had the ability to improve themselves. At some point in history they united into a society which allowed them to develop their mental and moral abilities. People changed from being unintelligent animals into intelligent and moral human beings. Rousseau believed that people are not naturally human.
People can become human only by interacting with each other in a society.
The big question was how to establish a society which protects people and at the same allows them to retain their freedom. People were born good filled with warmth and friendliness for others. Unfortunately this was destroyed and replaced with a competitive, selfish approach to the world when people began living together in societies. In Rousseau's opinion these nice people had to be protected from a corrupt society. Rousseau was very concerned about education.