Shabbos: Extinguishing A Candle
The Mishnah is clear: yes, it is permissible to extinguish a candle on Shabbos for the benefit of a seriously ill person. Less clear is the meaning of the sermon, which at one point suggests that God forgave the people even for eating on Yom Kippur when they were celebrating the dedication of the Temple, and that God said to David that He preferred a single day in which David studied Torah to a thousand of his olah offerings. These are two examples of instances when the very existence of the Temple led to practices that are undervalued by God when compared to the values of Rabbinic Judaism.
Ultimately, the sermon comes round to tie into the previous extended discussion of the proper care of the candle with a grand rhetorical flourish:
And as for the question that I asked of you, here is the answer: In the Hebrew language, a candle is called "a candle," and a person's soul is called "a candle." Thus, when one candle must be extinguished so that the other may survive, it is better to allow the candle fashioned by flesh and blood to be extinguished before the candle fashioned by the Holy One, Blessed is He. (30b).Which Rashi interprets to mean, "let a candle fashioned by man be extinguished so that the life of a person-- a "candle" fashioned by God-- may be preserved."