Rabbi Schneur Zalman of Liadi was a prominent Jewish leader and the founder of the Chabad movement, also known as Chabad-Lubavitch. Born in 1745 in what is now Belarus, he was a disciple of Rabbi Dovber of Mezeritch, a key figure in the Hasidic movement. Rabbi Schneur Zalman is best known for his philosophical writings, particularly the Tanya, which outlines the principles of Chabad philosophy and emphasizes the importance of intellect in spiritual practice. He served as a rabbi and community leader, guiding his followers through the challenges of the time, including political and social upheaval. Rabbi Schneur Zalman passed away in 1812, leaving a lasting legacy that continues to influence Jewish thought and practice today. His teachings focus on the relationship between the individual and God, promoting a deep understanding of the soul and its connection to the divine.