Shakespeare tells a bachelor that staying single makes the whole world a widow
Sonnet 9 imagines a young man refusing marriage so no wife will ever have to mourn him. Shakespeare flips the excuse inside out: die childless, and the entire world becomes the grieving widow, with no child's face to remind it of him. Hoarded beauty, the poem insists, is beauty destroyed.
The opening question offers the young man a flattering motive. Perhaps he stays unmarried out of tenderness, unwilling to leave a weeping widow behind. The speaker dismisses the idea at once. If he dies without issue, the world will mourn him like a wife who has lost her mate, and it will go on crying because he left no likeness of himself behind.
The contrast that follows is quietly moving. An ordinary widow, the poem says, can keep her husband's features alive in her memory by looking into her children's eyes. The bachelor denies the world even that consolation. Grief with a living reminder is bearable; grief with nothing left is not.
Then Shakespeare switches to the language of money. A spendthrift who wastes his fortune only moves it around, since the coins keep circulating and someone else enjoys them. Beauty is different: squandered through disuse, it simply ends, and the owner who refuses to use it ruins it. The couplet sharpens into accusation, calling the young man's self-neglect a murderous shame and concluding that a heart treating itself this way can hold no love for anyone else.
The poet's own life has a stretch almost as blank as the future this sonnet fears. After his twins were born in 1585, Shakespeare barely appears in surviving documents until he surfaces in the London theatre world in 1592, apart from a mention in a law case dated 1588 and 1589. Scholars call this gap the lost years. Stories fill it: Nicholas Rowe repeated a Stratford tale about fleeing prosecution for poaching deer from Thomas Lucy, and John Aubrey said he had been a country schoolmaster. Little beyond hearsay supports any of them.
Source: Sonnet 9: Is it for fear to wet a widow's eye