In theory, there is no difference between theory and practice. But, in practice, there is.
“I always said that if I could just find a guy who could chop wood and had a nice smile, it wouldn't bother me if he was a thug or an aristocrat, as long as he was a good guy. And I've ended up with an educated thug.”
“It is the eye of ignorance that assigns a fixed and unchangeable color to every object; beware of this stumbling block.”