Avempace, known as "Ibn al-Sa’igh" by Jewish tradition, is rarely recognized for his philosophical and astronomical works that influenced and were employed by many Medieval Jewish philosophers during and after his short life. The first record of Avempace's influence on Jewish philosophy comes from a well-known Jewish contemporary author and philosopher: Judah Halevi. In Chapter 1 of his greatest philosophical work, The Kuzari, Halevi summarizes three ideas directly influenced by works of Ibn Bajja: one's unification with the Active Intellect is attainable during their lifetime, this unification implies cognitive identity with others who are aware of the truth, and a philosopher's life is a solitary regimen.