It is not yours to finish the task, but neither are you free to set it aside.
Tarfon (fl. 1st-2nd C AD) Jewish rabbi, sage
Mishnah, Pirkei Avot 2:15-16
Alt. trans.:
- It is not incumbent upon you to finish the task, but neither are you free to absolve yourself from it.
- It is not up to you to finish the task, but you are not free to avoid it.
- We need not finish the task but neither can we desist from it.
- Although I am not free to avoid doing the work, it is not always necessary that I finish the task.
- You are not obligated to complete the work, but neither are you free to abandon it.