He wasn't wrong in that economics is not unlike a living organism and therefore difficult to describe. But concluding from that that mathematics as a tool should be discarded is a mistake. He was just born too early and maybe didn't anticipate the tools that were to be invented in the future, such as:
  • Chaos theory
  • Modern econometrics and financial engineering
  • Entirely new branches of mathematics (like stochastic processes) to describe and solve some of the problems
  • Computers to allow assist in solving and simulating
this territory is moderated