Is there something beyond traditional moral notions of right and wrong? Is there a higher Law that transcends all other laws? Mysticism has something to say about that.
We see this theme repeated over and over again throughout religious history into the present day, from Judaism through Christianity, in Hinduism and Buddhism, in Islam, in Confucianism and Taoism, and even into modern day scientific studies, that the overcoming of "self" or ego is central to our flourishing in an abundance of Life and Love in the world, and in realizing higher Truths that go far beyond our typical everyday minds and consciousness.
Confucianism and Taoism are two similar philosophies or religions mainly found in China. They also have a history of teachings about the "self" and overcoming this entity in order to realize a greater union with reality.