Every tub must stand on its own bottom

Every tub must stand on its own bottom,

 and Let every tub stand on its own bottom.
Prov. People should be independent. Emily did not want to join the other students, who were helping each other study for the exam. "Every tub must stand on its own bottom," she said. Don't ask me for help. Let every tub stand on its own bottom.
See also: bottom, every, must, on, stand, tub