Sentence:  If we must guard against the notions of "form, coherence" or "justifying" too narrowly, in terms of what is generally praised as “harmony” and “balance,” we must equally avoid interpreting them so broadly that everything whatever is “<WSD>formful</WSD>” simply because it has parts in relation to one another. 
Meaning of the word marked with <WSD> tags:  Well formed; aesthetically pleasing and skillfully constructed.