Everything is known to exist, though the existence of a thing may be qualified by the limiting factors which constitute the individuality of that thing. There can be no idea or knowledge, no action and no value, not even life itself, without existence. In the objective universe of names and forms there is the permanent principle of existence underlying all names and forms. Even if everything dies and is lost, the existence which supported that condition which is no more, cannot die or be lost. Since existence cannot change, there can be no death or birth for existence.
Existence is eternal.
The physical form of an external object is subject to transformation, and this transformation is called the process of birth and death. There is birth and death of forms, states, conditions, modes, but not of existence. Existence is what enables us to know that there is birth and death, that there is change and modification, etc. If existence itself is not, nothing can be. Everything is in some state or the other.