Our Sages taught, "The words of Torah protect," like a City of Refuge. A person may be tempted to step outside the spiritual "City of Refuge" of Torah, and make compromise in Jewish law on the basis that is "saving a life". I.e. while he admits the compromise is wrong, he feels it is necessary in order to draw the person toward Torah and mitzvos and to save his life, spiritually.

The law teaches one does not leave the City of Refuge, even for to save a life. For the "city" of Torah is the very life of a Jew, from which he cannot leave.

(Based on Likutei Sichos vol. 38, pp. 131-2)