"Rabbi ben Ezra" is a poem by Robert Browning about the famous Rabbi Abraham ibn Ezra (1092–1167), one of the great Jewish poets and scholars of the 12th century.
He wrote on grammar, astronomy, the astrolabe, and other topics.
The best is yet to be [...][1] It is not a biography of Abraham ibn Ezra; like all of Browning's historical poems, it is a free interpretation of the idea that ibn Ezra's life and work suggests to Browning.
At the center of the poem is a theistic paradox that good might lie in the inevitability of its absence: For thence,—a paradox Which comforts while it mocks,— Shall life succeed in that it seems to fail: What I aspired to be, And was not, comforts me: A brute I might have been, but would not sink i' the scale.
[1] The poem was published in Browning's Dramatis Personae in 1864.