What is a Soul? III. The Many Souls of Man
…[H]e who tries to cure the soul, wishing to improve the moral qualities, must have a knowledge of the soul in its totality and
December 15, 2021 / 11 Tevet 5782
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lubavitcher rebbe
What Is a Soul? II. Anatomy of the Soul
In the biblical story of the creation of Adam, the Torah states: Then the Eternal G‑d formed man of the dust of the ground, and
November 5, 2021 / 1 Kislev 5782
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Physics of Tzimtzum I — The Quantum Leap
Introduction “In the beginning G‑d created the heavens and the earth.” (Genesis 1:1) “In the beginning G‑d created the heavens and the earth,” the Torah
August 17, 2020 / 27 Av 5780
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Ki Tisa Hints at the Coronavirus
On the Eve of Shabbat, we received a government mailing containing documents that we were required to fill out and send back to the Census
March 16, 2020 / 20 Adar 5780
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The Tree of Knowledge as a Metaphor for Superposition of States and Heisenberg’s Uncertainty Principle
And out of the ground made the Lord G‑d to grow every tree that is pleasant to the sight, and good for food; and the
December 19, 2019 / 21 Kislev 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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The Puzzle of Pi
March 14 is celebrated by nerds around the world as the Pi Day. When written in digits, 3/14 represents first three digits of the number
March 14, 2019 / 7 Adar II 5779
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Wellsprings from Above and Wellsprings from Below
In the six hundredth year of Noah’s life, in the second month, on the seventeenth day of the month… all the fountains of the great
October 14, 2018 / 5 Heshvan 5779
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Shabbat Bereshit – Past, Present, and Future
In the last post, Tishrei—Past, Present, and Future, we discussed how all Tishrei holidays – Rosh HaShanah, Yom Kippur, Sukkot, and Simchat Torah – are
October 7, 2018 / 28 Tishri 5779
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Scientists are Clarifying Witnesses
Listen, O heavens, and I will speak! And let the earth hear the words of my mouth! (Deut. 32:1) In this Torah portion Haazinu, Moses
September 21, 2018 / 12 Tishri 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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Shoo Away the Mother Bird
If a bird’s nest chances before thee in the way, in any tree or on the ground, with fledglings or eggs, and the mother sitting
August 24, 2018 / 13 Elul 5778
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Re’eh – the Power of Seeing the Blessings
The Torah portion Re’eh, begins with the verse: Behold, I set before you this day a blessing and a curse. (Deut. 11:26) The first word
August 12, 2018 / 1 Elul 5778
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Hillel, Shammai and Richard Feynman
The Talmud (tr. Shabbat) discusses two opinions about the manner in which we are to light Chanukah menorah. According to Hillel, we light the first
January 1, 2017 / 3 Tevet 5777
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Fig of Rabbi Akiva
What came first, the Schrödinger cat or the fig of Rabbi Akiva? You be the judge. Today we present a guest post by Rabbi Dr. David
June 21, 2015 / 4 Tammuz 5775
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The End of Days II
This post is a continuation of the earlier post, The End of Days I. In this Torah Portion, Shemot, we read about the encounter between
January 5, 2015 / 14 Tevet 5775
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The End of Days I
In this Torah portion, Vayechi, Jacob, gathers his children to reveal to them “Ketz HaYamim”–“the End of Days.” Rashi explains that Jacob’s intention was to
January 2, 2015 / 11 Tevet 5775
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Two Beginnings
B’reshit bara Elokim et hashamaim v’et haaretz… In the beginning, G‑d created heaven and earth… Alternative translation: With two beginnings G‑d created heaven and earth…
October 12, 2012 / 26 Tishri 5773
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On the Nature of Time and the Age of the Universe
Presented at the International Torah and Science Conference in Miami International University on December 18, 2005 Alexander Poltorak Introduction. This is the third in
August 15, 2012 / 27 Av 5772
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