The rhetorical use of obscurity is, however, a vice. It is often said … that the purpose of obscure or difficult writing is to create the illusion of profundity … in its more subtle usages, obscurity can be used to create the illusion of deeply reasoned discourse.
— Peter Medawar
… no-one who has something original or important to say will run the risk of being misunderstood; people who write obscurely are either unskilled in writing or up to mischief. The writers I am speaking of are, however, in a purely literary sense, extremely skilled.
— Peter Medawar