[The oyster] accepts algae ...

[The oyster] accepts algae and detritus in one end - and through this beautiful, glamorous set of stomach organs, out the other end comes cleaner water.
[The oyster] accepts algae and detritus in one end - and through this beautiful, glamorous set of stomach organs, out the other end comes cleaner water.
 Kate Orff

More phrases

Effort only fully releases its reward after a person refuses to quit.
Never complain and never explain.
A good plan violently executed now is better than a perfect plan executed next week.
 George S. Patton
Problems are not stop signs, they are guidelines.
 Robert Schuller
Never give up, for that is just the place and time that the tide will turn.
 Harriet Beecher Stowe