Reference: These lines are from the poem ‘Ulysses” written by Alfred Tennyson.
Context: The poet says these words while discussing the mental agony of Ulysses who is unable to settle down with his ageing wife Penelope and son Telemachus.
Explanation: Ulysses finds doling out justice to a savage people as ‘boring’. He does not want to settle down and die in Ithaca. He compares himself to a sword which may rust if left unused. He wants to lead an active and adventurous life till his death.