The schools of Shammai and Hillel for the very first time disagreed regarding a case of Jewish law. This occurred around the turn of the 1st century. In the ensuing generations, the schools argued regarding many different laws, until the law was established according to the teachings of the "House of Hillel" -- with the exception of a few instances. According to tradition, following the arrival of the Moshiach the law will follow the rulings of the House of Shammai.
All throughout, the members of the two schools maintained friendly relations with each other.
After a 12-day sea voyage, the previous Lubavitcher Rebbe, Rabbi Yosef Yitzchak Schneersohn (1880-1950), disembarked at the New York harbor on the 9th of Adar II of 1940, following his miraculous rescue from Nazi-occupied Warsaw.
Links:
Vintage film clip of the Rebbe's arrival in NY, March 19, 1940
More about Rabbi Yosef Yitzchak of Lubavitch
Of the 54 parshiot of the Five Books of Moses, only one is named after a woman. It is called “The Life of Sarah.”
It opens by informing us that Sarah has died.
Yes, this is the life of Sarah. Her true life. Because only in her passing was Sarah’s life fulfilled.
During her lifetime, she and her husband Abraham surveyed the land promised to their children. Only once Sarah died did Abraham make his first actual purchase, publicly and with full payment. Sarah’s burial plot and its accompanying field in Hebron mark the seminal point of the Land of Israel.
During her lifetime, Sarah had only one child, who remained single. From where would come the “offspring more numerous than the stars” that G‑d had promised? With Sarah’s passing, the match between Isaac and Rebecca was made, a woman much like Sarah, through whom the Jewish people would become a reality.
During Sarah’s lifetime, Abraham was not able to guide Ishmael. By divine command, he was compelled to harken to Sarah, who witnessed Ishmael’s corruptive influence and demanded he be sent away. By the end of the parashah, Abraham is following in the ways of Sarah with the rest of his children. Even Ishmael has repented and accepted Isaac as the true heir of Abraham.
It was after Sarah’s passing that Abraham’s vision began to emerge into reality in this world—through the work of Sarah.
This is true life—a life not confined to the years of a physical body, but a life that becomes yet more real after it is released from those confines, and continues to be felt more and more with every year that passes.
Such is the life of a mother. While the rest of us live within a moment that has already disappeared, a mother gives life, nurtures life, and guides that life into eternity.