Over and Over again Mahayana sutras point out that everything we think or believe is rooted in dualistic thought, and thus none of it is ultimately real, and all of it leaves us in a web of our mind's making. We may say there is day and night, but these are not actually separate phenomena. They are interdependent, empty of separation, not-two. You can't have a day without night; they interdependently are. Absolutely everything that can be conceived or spoken is like this.
~Ben Connelly, in Inside Vasubandhu's Yogacara