Meanwhile, by an arrangement with leading booksellers, Johnson had entered on the largest, and, as it proved, the decisive, work of his life, the preparation of his 'Dictionary of the English Language.' The earliest mentionable English dictionary had appeared as far back as 1604, 'containing 3000 hard words ... gathered for the benefit and help of ladies, gentle women, or any other unskilful persons.' Others had followed; but none of them was comprehensive or satisfactory. Johnson, planning a far more thorough work, contracted to do it for £1575--scanty pay for himself and his copyists, the more so that the task occupied more than twice as much time as he had expected, over seven years. The result, then, of very great labor, the 'Dictionary' appeared in 1755. It had distinct limitations. The knowledge of Johnson's day was not adequate for tracing the history and etymology of words, and Johnson himself on being asked the reason for one of his numerous blunders could only reply, with his characteristic blunt frankness, 'sheer ignorance.' Moreover, he allowed his strong prejudices to intrude, even though he colored them with humor; for example in defining 'oats' as 'a grain which in England is generally given to horses, but in Scotland supports the people.' Jesting at himself he defined 'lexicographer' as 'a writer of dictionaries, a harmless drudge.' Nevertheless the work, though not creative literature, was a great and necessary one, and Johnson did it, on the whole, decidedly well. The 'Dictionary,' in successive enlargements, ultimately, though not until after Johnson's death, became the standard, and it gave him at once the definite headship of English literary life. Of course, it should be added, the English language has vastly expanded since his time, and Johnson's first edition contained only a tithe of the 400,000 words recorded in the latest edition of Webster (1910). With the 'Dictionary' is connected one of the best-known incidents in English literary history. At the outset of the undertaking Johnson exerted himself to secure the patronage and financial aid of Lord Chesterfield, an elegant leader of fashion and of fashionable literature. At the time Chesterfield, not foreseeing the importance of the work, was coldly indifferent, but shortly before the Dictionary appeared, being better informed, he attempted to gain a share in the credit by commending it in a periodical. Johnson responded with a letter which is a perfect masterpiece of bitter but polished irony and which should be familiar to every student. The hard labor of the 'Dictionary' had been the only remedy for Johnson's profound grief at the death of his wife, in 1752; and how intensively he could apply himself at need he showed again some years later when to pay his mother's funeral expenses he wrote in the evenings of a single week his 'Rasselas,' which in the guise of an Eastern tale is a series of philosophical discussions of life.