Principle of Least Action III — History
The spectacle of the universe becomes so much the grander, so much more beautiful, the worthier of its Author, when one knows that a small
September 10, 2023 / 24 Elul 5783
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malchus
Yom Kippur—The Day of Pure Delight
Yom Kippur means “The Day of Atonement.” Some view it as a frightening day full of regrets of the past and anxiety for the future.
September 15, 2021 / 9 Tishri 5782
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Counting Weeks and Days
There is a Biblical Commandment to count the days between the Passover and Shavuot, the “Feast of Weeks” (a.k.a. Pentecost). We start counting on the
April 28, 2020 / 4 Iyyar 5780
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The Land We Married
And the Lord spoke unto Moses, saying: ‘Command the children of Israel, and say unto them: When ye come into the land of Canaan, this
August 4, 2019 / 3 Av 5779
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Space – Between the Future and the Past
Meditations on the Maaseh Merkavah – I We do science by studying nature. We study physics in a lab, peering into space or working out
June 13, 2019 / 10 Sivan 5779
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Unified Field Theory and the Dew of Resurrection
And ye shall take you on the first day the fruit of goodly trees, branches of palm-trees, and boughs of thick trees, and willows of
May 19, 2019 / 14 Iyyar 5779
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The Beard of the Long Face is Found
The previous Lubavitcher Rebbe, the Rebbe Rayatz (a.k.a. the Fridriker Rebbe) told the story about his father, the Rebbe Rashab. Once the brother of Rebbe
August 31, 2018 / 20 Elul 5778
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Breaking Symmetry
And Moses turned, and went down from the mount, with the two tablets of the testimony in his hand; tablets that were written on both
March 4, 2018 / 17 Adar 5778
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Fractal Patterns in the Torah
In the Torah portion Emor (Leviticus 21:1–24:23), we are instructed to abstain from work every seventh day on Shabbat. Next week’s Torah portion, Behar, continues
May 31, 2016 / 23 Iyyar 5776
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Joseph and His Brothers
I grew up in Russia and was raised on the metric system based on decimal arithmetic. When we immigrated to the U.S., I had to
December 14, 2014 / 22 Kislev 5775
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Forty Two Journeys to the Answer to the Ultimate Question of Life, the Universe, and Everything
These are the journeys of the children of Israel… (Numbers 33:1) When G-d brought the Jews out from Egypt, He brought them out with the mystery of
July 27, 2014 / 29 Tammuz 5774
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Menorah
Speak unto Aaron, and say unto him: “When thou lightest the lamps, the seven lamps shall give light in front of the menorah.” (Num. 8:1)
June 8, 2014 / 10 Sivan 5774
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Pesach – Time of our Freedom
The holiday of Passover – Pesach – is called zman cheruteinu– time of our freedom. As we have discussed many times on this blog (see
April 18, 2014 / 18 Nisan 5774
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Cosmological Rosh HaShanah
This Rosh HaShanah I had the strangest dream. I dreamed that I was giving a lecture in cosmology at a university when I suddenly realized
September 9, 2013 / 5 Tishri 5774
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