That a thought is difficult is no defect. Only when the thought is more difficult than another at least as good is there a defect.
And likewise with a system of thought: that a system is not initially or eventually or internally clear is no argument against it, but only against using in a context that demands ease.
The difficulty of an idea, or the the obscurity of a system, may be the grit that gives the idea traction, or the compaction that gives an idea utility.
