Marx said he was not a Marxist. There were so many people using his name to bless their own work. He would preffered to be called a scientific socialist.As far as limits go Engels admitted that most of their work had been on the base rather than the superstructure of society. There is no formal limits in the subjective sense from the Manifesto we have "The free development of all is the condition for the free development of each"
On the objective side we have the basicaly common sense idea that people are products of their own times.
Man's dearest possession is life, and since it is given to him to live but once.He must so live that dying he can say, all my life and all my strength have been given to the greatest cause in the world, the liberation of mankind
Ostrovski
Muriel Spark:
If I had my life to live over again I should form the habit of nightly composing myself to thoughts of death. I would practice, as it were, the remembrance of death. There is no other practice which so intensifies life. Death, when it approaches, ought not to take one by surprise. It should be part of the full expectancy of life. Without an ever-present sense of death life is insipid. You might as well live on the whites of eggs.
