Before revision: He became one of the first sociologists to claim that the evolution of society is not necessarily going in the right direction, that the social progress is not perfect - it can even be called a regress as the newer, more evolved societies are obtained only after paying high costs, resulting in decreasing satisfaction of individuals making up that society.
After revision: He became one of the first sociologists to claim that the evolution of society is not necessarily going in the right direction, that the social progress is not perfect — it can even be called a regress as the newer, more evolved societies are obtained only after paying high costs, resulting in decreasing satisfaction of individuals making up that society.