A vindication of the press: or, An essay on the usefulness of writing, on criticism, and the qualification of the authors. Wherein is shewn, that 'tis for the advantage of all governments to encourage writing, otherwise a nation would never be secure from the attempts of its most secret enemies; barbarous and prejudic'd criticisms on writings are detected, and criticism is justly stated. With an examination into what genius's and learning are necessary for an author in all manner of performances