The concept of "Avice" refers to the philosophical and theological ideas associated with Avicenna (Ibn Sina), a Persian polymath whose writings on metaphysics, psychology, and theology shaped medieval thought. Thinkers like Thomas Aquinas interacted with Avicenna’s theories on the soul’s relationship with matter, while Meister Eckhart referenced his idea of spiritual purification.
Aquinas also contested Avicenna’s perspectives on separate substances and intellectual essences, emphasizing the conflicts between Aristotelian and Neoplatonic traditions. In addition, W. B. Yeats drew upon Avicenna’s symbolic heritage in mystical literature. These varied interpretations illustrate how "Avice" evolved into a meeting point for harmonizing rational exploration with spiritual transcendence across different cultures and historical periods.