See where the Thames, the purest stream
Thames as metaphor
River becomes extended metaphor for human emotions. Cowper uses natural landscape to explore psychological terrain.
Liquid ore image
Metallic metaphor suggests the river's value and luminosity. Transforms water into something precious and gleaming.
Pollution of streams
Colonial reference: 'sable flood' suggests rivers from African territories contaminating the pristine Thames. Racial undertones of purity.
Soul as river current
Psychological allegory where human emotions mirror river's flow—complex, changeable, potentially turbulent.