a moment's notice

One is meant to break his nature by delaying the gratification of his natural desires. (even for a few moments) Berachot were originally intended to do this, before we can eat or do anything else pleasurable, we stop and recognise that this pleasure is coming from HaShem. Nowadays we say berachot so quickly and automatically, they no longer serve this purpose.

-paraphrased from a shiur with Rav Adin Steinsaltz this past thursday.

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