There is, therefore, but one Atman, one Self, eternally pure, eternally perfect, unchangeable, unchanged; it has never changed; and all these various changes in the universe are but appearances in that one Self. Upon it name and form have painted all these dreams; it is the form that makes the wave different from the sea. Suppose the wave subsides, will the form remain? No, it will vanish. The existence of the wave was entirely dependent upon the existence of the sea, but the existence of the sea was not at all dependent upon the existence of the wave. The form remains so long as the wave remains, but as soon as the wave leaves it, it vanishes, it cannot remain. This name and form is the outcome of what is called Maya. It is this Maya that is making individuals, making one appear different from another. Yet it has no existence. Maya cannot be said to exist. Form cannot be said to exist, because it depends upon the existence of another thing. It cannot be said as not to exist, seeing that it makes all this difference. According to the Advaita philosophy, then, this Maya or ignorance — or name and form, or, as it has been called in Europe, "time, space, and causality" — is out of this one Infinite Existence showing us the manifoldness of the universe; in substance, this universe is one. So long as any one thinks that there are two ultimate realities, he is mistaken.