Also, the fullest statement of your idea of no immutable universal laws is in _Anti-Duhring_ by Engels. I think it's the earliest in the period we are talking about. Seems to me you are a Marxist on this issue.
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Eubilides:Dadgummmmmit for the umpteenth time on this list; Buddha, Nagarjuna
Reperiodizing.............:-)
^^^^^
CB: Sorry to be Eurocentric. ( I did say "in the period we are talking about" meaning modern times) Does Buddha connect it with "pragmatism", practical-critical activity ? Pragmatism is: "yea the laws are mutable , but they are worth discovering if they "work" for a while." Without the pragmatism it can tend to make people feel hopeless, as Manjur pointed out.
By way of Engels, the philosophical ideas lend intellectual credibility to a movement to get beyond capitalism. If pragmatists or Buddhists or Nietzscheans organize revolution for socialism, great. I haven't seen evidence of any of these other schools of thought doing much in this regard compared to Marxists.