Closely linked with the former is "Bitul ha-Yesh", "Negation of the Existent", or of the "Corporeal". Hasidism teaches that while a superficial observance of the universe by the "eyes of the flesh" ("Einei ha-Basar") purportedly reflects the reality of all things profane and worldly, a true devotee must transcend this illusory façade and realize that there is nothing but God. It is not only a matter of perception, but very practical, for it entails also abandoning material concerns and cleaving only to the true, spiritual ones, oblivious to the surrounding false distractions of life. The practitioner's success in detaching from his sense of person, and conceive himself as "Ein" (in the double meaning of 'naught' and 'infinite'), is regarded as the highest state of elation in Hasidism. The true divine essence of man – the soul – may then ascend and return to the upper realm, where it does not possess an existence independent from God. This ideal is termed "Hitpashtut ha-Gashmi'yut", "the expansion (or removal) of corporeality". It is the dialectic opposite of God's contraction into the world.