The poem
Donne, the delight of Phoebus and each Muse Who, to thy one, all other brains refuse; Whose every work of thy most early wit Came forth example, and remains so yet; Longer a-knowing than most wits do live; And which no affection praise enough can give! To it, thy language, letters, arts, best life, Which might with half mankind maintain a strife. All which I meant to praise, and yet I would; But leave, because I cannot as I should!

Analysis
Jonson, a contemporary of Donne's, wrote this epigram in praise of a man with whom he himself was often compared. Jonson is saying Donne delights the gods of light and inspiration. Donne always has been and will continue to be witty. Jonson would continue to praise Donne's works as he should, but he can never do it justice.
comment
The theme of poem is praising agreat poet John Donne .Ben Johnon values Donn;s poetry and gives ahigh rank of witty and perfectly .Donne has highmark more than Johnson because he praises him.