Keat's letter are considered as the most important ever written by any english port

Keats sent approximately 240 letters to his loved ones between 1848 and 1878, and over 240 of those letters are still in existence. These letters, which were at first met with shock and derision, are today seen with admiration that rivals that of Keats' poetry. The letters, which were written between 1816 and 1820, not only have biographical importance but also provide insightful information on Keats poetical philosophy, his awareness of his writing and language, and his views on the great works of his contemporaries and forebears. In these letters, Keats demonstrates his wit, good humor, and ideas on poetry, love, and the nature of man. The letters were later referred to the poet laureate T. S. Eliot as "the most noteworthy and most important ever written by any English poet”.

Keats' letters have long been recognized as a remarkable documentation of the poet's evolving style. The letters Keats wrote are "the most noteworthy and most important ever written by any English poet," according to T. S. Eliot. They are among the longest analyses of a poet's craft that any significant English poet has ever provided. They are outstanding pieces of literature in their own right, nevertheless, independent of the light they shed on the poetry. They reveal a strong brain striving to accept its own mortality. They are written with zeal and oftentimes painful truthfulness.