eruvin 56

dangerous vegetables and dangerous cities.
and the cities one flees to when in danger.

(it is harmful to one's health to live in a city with a lot of stairs and steep inclines. or one without vegetables. but certain vegetables are considered harmful. also on this page is a discussion about the route of the sun in the sky at different seasons to determine north. and determining the boundaries of the city by following the model of the Levite cities, the cities of refuge, of squaring the circle)

shabbat shalom from NY. I will be speaking at Lincoln Square Synagogue this shabbat, see here for details.

eruvin 42

walking to extend and establish the limits of one's shabbat residency and carrying.

walking on a boat, limited space but can travel
vs.
walking in a open field

eruvin 21

setting limits & boundaries in the physical world for shabbat
v.
the expanses of the world of Torah

(this page contains interpretations of various verses of Song of Songs to apply to the relationship to Torah learning. seems timely as it is Pesach, the festival where we read the Song of Songs. chag samech and shabbat shalom)

brachot 27

when can afternoon be evening? and evening afternoon?

the boundaries of time & space of prayer

not behind
and not walk in front of someone praying