It does not appear when they were composed.

The first is probably earlier than the second; for below the autograph of the latter is written, "Messer Donato, you ask of me what I do not possess." The Donato is undoubtedly Donato Giannotti, with whom Michelangelo lived on very familiar terms at Rome about 1545.

I will here insert my English translation of these sonnets:-- _From heaven his spirit came, and, robed in clay, The realms of justice and of mercy trod: Then rose a living man to gaze on God, That he might make the truth as clear as day._ _For that pure star, that brightened with his ray The undeserving nest where I was born, The whole wide world would be a prize to scorn; None but his Maker can due guerdon pay.
I speak of Dante, whose high work remains Unknown, unhonoured by that thankless brood, Who only to just men deny their wage.
Were I but he! Born for like lingering pains, Against his exile coupled with his good I'd gladly change the world's best heritage! No tongue can tell of him what should be told, For on blind eyes his splendour shines too strong; 'Twere easier to blame those who wrought him wrong, Than sound his least praise with a mouth of gold.
He to explore the place of pain was bold, Then soared to God, to teach our souls by song; The gates heaven oped to bear his feet along, Against his just desire his country rolled.
Thankless I call her, and to her own pain The nurse of fell mischance; for sign take this, That ever to the best she deals more scorn; Among a thousand proofs let one remain; Though ne'er was fortune more unjust than his, His equal or his better ne'er was born._ The influence of Dante over Buonarroti's style of composition impressed his contemporaries.

Benedetto Varchi, in the proemium to a lecture upon one of Michelangelo's poems, speaks of it as "a most sublime sonnet, full of that antique purity and Dantesque gravity." Dante's influence over the great artist's pictorial imagination is strongly marked in the fresco of the Last Judgment, where Charon's boat, and Minos with his twisted tail, are borrowed direct from the _Inferno._ Condivi, moreover, informs us that the statues of the Lives Contemplative and Active upon the tomb of Julius were suggested by the Rachel and Leah of the _Purgatorio._ We also know that he filled a book with drawings illustrative of the "Divine Comedy." By a miserable accident this most precious volume, while in the possession of Antonio Montauti, the sculptor, perished at sea on a journey from Livorno to Rome.
But the strongest proof of Michelangelo's reputation as a learned student of Dante is given in Donato Giannotti's Dialogue upon the number of days spent by the poet during his journey through Hell and Purgatory.

Luigi del Riccio, who was a great friend of the sculptor's, is supposed to have been walking one day toward the Lateran with Antonio Petreo.