The five volumes which contain the letters between Pope and his friends exhibit an interesting picture of the times and of the writers. The poet's own letters, as may be supposed from the thought he bestowed on them, are full of artifice, and composed with the most elaborate care. Every sentence is elaborately turned, and the ease and naturalness which give a charm to the letters of Cowper and of Southey are not to be found in Pope. His epistles are weighted with compliments and with professions of the most exalted morality. 'He laboured them,' says Horace Walpole, 'as much as the _Essay on Man_, and as they were written to everybody they do not look as if they had been written to anybody.' Pope said once, what he did not mean, that he could not write agreeable letters. This was true; his letters are, as Charles Fox said, 'very bad,' but some of Pope's friends write admirably, and if there is much that can be skipped without loss in the correspondence, there is much which no student of the period can afford to neglect. 'There has accumulated,' says Mark Pattison, 'round Pope's poems a mass of biographical anecdote such as surrounds the writings of no other English author,' and not a little knowledge of this kind is to be gleaned from his correspondence. In the years spent at Twickenham Pope produced his most characteristic work. It is as a satirist that he, with one exception, excels all English poets, and Pope's careful workmanship often makes his satirical touches more attractive than Dryden's.