Essence is a polysemic term, used in philosophy and theology as a designation for the property or set of properties that make an entity or substance what it fundamentally is, and which it has by necessity, and without which it loses its identity.
在哲学中，本质（英語：Essence）是一种属性或一组属性，它们使一个实体或物质成为它的根本所在，并且它必然存在，如果没有它，它就失去了它的身份。