Herbert Grierson was only 28 when he was appointed Professor of English Literature at the University of Aberdeen in 1895; in the following quarter of a century he established himself as the most distinguished literary critic of his time: first, by the publication in 1912 of his edition of the poetry of the then little acknowledged seventeenth-century English poet John Donne, and subsequently by his influential anthology of The Metaphysical Poets, published in 1919. Because of Grierson, Donne became the most admired poet of some of the twentieth-century’s most influential poets, and the ‘Metaphysicals’ became the model for many of the most radical developments in twentieth-century poetry.