Zen

Zen is a school of Mahāyāna Buddhism notable for its emphasis on practice and experiential wisdom—particularly as realized in the form of meditation known as zazen—in, the attainment of awakening. As such, it de-emphasizes both theoretical knowledge and the study of religious texts in favor of direct individual experience of one's own true nature.

UNSC Artificial Intelligence constructs are fascinated by Zen philosophy because of their natural creativity and limited life span. Dr. Catherine Halsey, designer of many of these AIs, is sometimes able to manipulate them by presenting them with Zen philosophies.

Trivia

 * Ironically, some Covenant Elites similarly follow a form of Mendicant in the same fashion that the Spartans casually perform Zen.