From "Life of Milton," Lives of the English Poets by Samuel Johnson (1779)

The Sonnets were written in different parts of Milton's life upon different occasions. They deserve not any particular criticism; for of the best it can only be said that they are not bad, and perhaps only the eighth and the twenty-first are truly entitled to this slender commendation. The fabrick of a sonnet, however adapted to the Italian language, has never succeeded in ours, which, having greater variety of termination, requires the rhymes to be often changed. Those little pieces may be dispatched without much anxiety. . .