He died in September, 1653, at Spa, as, remote from books, but making his memory his library, he was penning his answer.

This unfinished production, edited by his son, appeared after the Restoration, when the very embers of the controversy had grown cold, and the palm of literary victory had been irrevocably adjudged to Milton.
Milton could hear the plaudits, he could not see the wreaths.

The total loss of his sight may be dated from March, 1652, a year after the publication of his reply.

It was then necessary to provide him with an assistant--that no change should have been made in his position or salary shows either the value attached to his services or the feeling that special consideration was due to one who had voluntarily given his eyes for his country.

"The choice lay before me," he writes, "between dereliction of a supreme duty and loss of eyesight; in such a case I could not listen to the physician, not if AEsculapius himself had spoken from his sanctuary; I could not but obey that inward monitor, I know not what, that spoke to me from heaven." In September, 1654, he described the symptoms of his infirmity to his friend, the Greek Philaras, who had flattered him with hopes of cure from the dexterity of the French oculist Thevenot.