was regretful: perhaps had he not weakened himself he could have lived to put on tefillin even one more time.
R. Michoel Dvorkin came in once when I was working at the machine. Noticing my expression which, in all likelihood, was gloomy, he said: “Serve G-d with joy!”49 — mirroring the Rebbe Rayatz’ words, “Six days you shall work50 — is a mitzvah.”