Apart from a few simple principles, the sound and rhythm of English prose seem to me matters where both writers and readers should trust not so much to rules as to their ears.
The most emphatic place in a clause or sentence is the end. This is the climax; and, during the momentary pause that follows, that last word continues, as it were, to reverberate in the reader's mind. It has, in fact, the last word.
The two World Wars came in part, like much modern literature and art, because men, whose nature is to tire of everything in turn... tired of common sense and civilization.