Vajra is a Sanskrit word which defies translation because of its numerous connotations, but essentially vajra is an indestructible substance, usually represented by diamond. Vajra refers to the vajra mind, the vajra nature, and the vajra prajna. Vajra is identical with the self-nature, implying indestructible and adamantine.This Sutra consists of 32 sections, recording the dialogue among Buddha and his deciples, explaining the very nature of wisdom-- unconditional, transcendental, and a priori.