Summary of the Poem "On His Blindness / When I consider how my light is spent" is a sonnet written by John Milton, an acclaimed seventeenth century English poet. As a sonneteer, Milton widened the range of the sonnet and revived the classical or the Petrarchan sonnet from, falling into parts: the first, an octave … Continue reading John Milton – Sonnet 19 / On His Blindness (Poem Summary)