In the very first mishnah in Avot (1:1), the Anshei Knesset Gedolah (“Men of the Great Assembly”) pronounce on three things that we are urged to do:
הֱווּ
מְתוּנִים בַּדִּין, וְהַעֲמִֽידוּ תַּלְמִידִים הַרְבֵּה, וַעֲשׂוּ סְיָג לַתּוֹרָה
Be deliberate in judgement, and
raise up many pupils, and make a fence around the Torah.
The Anshei Knesset Gedolah don’t specify which fence they
have in mind but the consensus view is that they are encouraging us to adopt chumrot,
stringencies, in order to distance ourselves from the transgression of the
Torah’s many and sometimes pervasive Torah prohibitions (see for example the
commentaries of Rambam, Rabbenu Yonah, Bartenura and Rashi). The Meiri takes a
similar line though, in line with the baraita at Avot 6:6. he limits its focus
to building fences round our words, to guard against improper speech.
At Avot 3:17—the only other place in Avot that mentions
fences—Rabbi Akiva advertises the importance of four fences in particular:
מַסֹּֽרֶת
סְיָג לַתּוֹרָה, מַעְשְׂרוֹת סְיָג לָעֹֽשֶׁר, נְדָרִים סְיָג לַפְּרִישׁוּת,
סְיָג לַחָכְמָה שְׁתִיקָה
Tradition is a fence to Torah,
tithing a fence to wealth, vows a fence for abstinence; a fence for
wisdom is silence.
If this teaching illustrates his view of the scope of Avot
1:1, Rabbi Akiva’s understanding of it runs wider than that of the commentators
we mentioned above, since his four fences deal with the safeguarding of
‘positives’. This point is picked up by Rabbi Menachem Mendel of Vizhnitz
(quoted in Zwecker, Ma’asei Avos) when he comments on the word
order. The first three fences are presented
in the format of “Y is a fence to Z”, while the fourth is “A fence to Z is Y”.
Why should this be so?
With the seder service still fresh in our minds, it’s worth
pointing out that the four fences in this mishnah loosely correspond to the
Four Sons in the Haggadah. Tradition
being a fence to the Torah corresponds to the Wise Son, who asks about the
festival’s halachic content but receives an answer that is based on tradition,
not on any biblical rule. Vows to fence
in abstinence are relevant to the Wicked Son, whose natural inclination tends
towards over-indulgence rather than abstinence.
Silence being a fence to wisdom relates to the she’eino yode’a lishol—the
son who is silent—the One Who Doesn’t Know How to Ask. We respond to his silence
by opening the subject of Pesach with
him and thereby make him wise. The
remaining fence, of tithes being a fence to wealth, is an allusion to the tam,
the Perfect (not ‘Simple’) son. What is the relevance of tithes? The tithe is
one tenth of one’s produce. This is depicted in the very word tam (תם),
in which the letter ם has a numerical value of 40, exactly
one-tenth of the value of ת, which is 400.
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