In making the formed and formless two modalities of existence, Zhang Zai allows that both are equally real.
This cosmology is made up of both the Yin/Yang system, the complementarity of opposing modalities of existence, as well as the so-called Five Elements (wu-hsing), a constantly changing system of "elements" moving in regular fashion demarcated by the symbols of water, wood, fire, earth and metal.
What is considered is the quiddity (māhiyya) or essence (ḏāt) of what exists: the modality of existence depends, in fact, not on existence (which would be impossible), but on essence (although in the case of the Principle there is no essence different from its own existence; see Section 2.4).
Whatever happens in the latter is repeated on the side of thought, though according to thought's own modality of existence.
In other words, Heidegger does not deny the reality of the subject/object relation but, rather, points out that our experience of this subject/object relation derives from and so presupposes a more fundamental level of experience, a primordial modality of engaged existence in which self and world are united rather than divided.
His most elaborate cosmological scheme (among several) depicts the basic levels of cosmic deployment as corresponding with the twenty-eight letters of the Arabic alphabet, each representing a specific modality of articulated existence (Burckhardt 1977, Chittick 1998).
無 bo 4 may be ambiguous between negation of existence and negation of deontic modality in Old Chinese.
However, this is only a small fraction of the cutaneous sensory modalities in existence.
The intimate relation between choice, covenant, and Torah determined the modality of Israel's existence.
4 Coronary angiography is still the gold standard for identification of CAD, despite the existence of different modalities of noninvasive imaging studies, as the temporal and spatial resolution of conventional coronary angiography is higher than any noninvasive study.
However, it seems a fundamental feature of common ideas about modality that the existence of many things is contingent, and that different objects exist in different possible worlds.
