Passing of the great Chassidic leader and advocate for the Jewish people, Rabbi Levi Yitzchak of Berditchev (1740-1809). Rabbi Levi Yitzchak was a close disciple of the second leader of the Chassidic movement, Rabbi DovBer, the Maggid of Mezritch. He is best known for his love for every Jew and his impassioned words of advocacy on their behalf before the Almighty.
Link: Kol Nidrei; more on R. Levi Yitzchak
Tishrei 25th is the yahrtzeit of Rabbi Moshe Sofer of Pressburg (1762-1839), known as "Chatam Sofer" after his work of Rabbinic responsa. Rabbi Moshe was an outstanding Halachic authority and community leader, and was at the forefront of the battle to preserve the integrity of traditional Judaism in the face of the various "reformist" movements of his time.
It all began with an unbounded light
that filled all and left no room for a world to be.
Then that light was withheld
so that the world might be created in the resulting void.
Then the world was created,
with the purpose of returning to that original state of light
—yet to remain a world.
That is something greater than unbounded light:
A dark world that shines, through our hard work.