It seems to me that socialists today can preserve their position in academic economics merely by the pretense that the differences are entirely moral questions about which science cannot decide.
A claim for equality of material position can be met only by a government with totalitarian powers.
Why should we, however, in economics, have to plead ignorance of the sort of facts on which, in the case of a physical theory, a scientist would certainly be expected to give precise information?
We must face the fact that the preservation of individual freedom is incompatible with a full satisfaction of our views of distributive justice.
The mind cannot foresee its own advance.
I regard it in fact as the great advantage of the mathematical technique that it allows us to describe, by means of algebraic equations, the general character of a pattern even where we are ignorant of the numerical values which will determine its particular manifestation.