The question should be, is it ...

The question should be, is it worth trying to do, not can it be done.
The question should be, is it worth trying to do, not can it be done.
 Allard K. Lowenstein

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

Quotes from the same author

If there's no connection between the tactic and the result you're trying to achieve, and if in the process you can damage other people who are in fact innocent in the whole situation, I think you ought to re-examine whether what you're doing makes sense.
 Allard K. Lowenstein