"True in theory" but "not valid in practice"? Nonsense.

Excerpted from “Egalitarianism as a Revolt Against Nature”:

[W]e must challenge the very idea of a radical separation between something that is "true in theory" but "not valid in practice." If a theory is correct, then it does work in practice; if it does not work in practice, then it is a bad theory. The common separation between theory and practice is an artificial and fallacious one. But this is true in ethics as well as anything else. If an ethical ideal is inherently "impractical," that is, if it cannot work in practice, then it is a poor ideal and should be discarded forthwith. To put it more precisely, if an ethical goal violates the nature of man and/or the universe and, therefore, cannot work in practice, then it is a bad ideal and should be dismissed as a goal. If the goal itself violates the nature of man, then it is also a poor idea to work in the direction of that goal.