This sometimes helps, as, for instance, when the subject is hard; words
that may be, strictly speaking, unnecessary still may make things easier
for the reader by giving him more time to master the thought while his
eye is running over the verbiage. So, a little water may prevent a
strong drink from burning throat and stomach. A style that is too terse
is as fatiguing as one that is too diffuse. But when a passage is
written a little long, with consciousness and compunction but still
deliberately, as what will probably be most easy for the reader, it can
hardly be called diffuse.