Analysis of information sources in references of the Wikipedia article "خدا در هندوئیسم" in Persian language version.
[...] one need not be religious in the minimal sense described to be accepted as a Hindu by Hindus, or describe oneself perfectly validly as Hindu. One may be polytheistic or monotheistic, monistic or pantheistic, even an agnostic, humanist or atheist, and still be considered a Hindu.
According to Hinduism, different religions are but alternate ways toward the same spiritual goal. Thus, although spirituality is a necessary quest for human beings, the religion one follows does not have to be the same for everyone. [...] The first Hindu scripture, the Rigveda, dating back to at least 4.000 years, says: "Truth is one, though the wise call it by different names." The Mahabharata, which includes the Gita, is replete with sayings meaning that religious streams, though separate, head toward the same ocean of divinity.
The Upanishads form the foundations of Hindu philosophical thought and the central theme of the Upanishads is the identity of Atman and Brahman, or the inner self and the cosmic self. [...] If we adhere to the thought that the Brahman is the cosmic principle governing the universe and Atman as its physical correlate, the essence of Upanishadic thought can be succinctly stated in the formula Brahman = Atman.
For Hindus, especially those in the Advaita Vedanta tradition, Brahman is the undifferentiated reality underlying all existence. Brahman is the eternal first cause present everywhere and nowhere, beyond time and space, the indefinable Absolute. The gods are incarnations of Brahman. It can be said that everything that is Brahman. And it can be argued that Brahman is a monotheistic concept or at least a monistic one, since all gods – presumably of any tradition – are manifestations of Brahman, real only because Brahman exists.
[...] one need not be religious in the minimal sense described to be accepted as a Hindu by Hindus, or describe oneself perfectly validly as Hindu. One may be polytheistic or monotheistic, monistic or pantheistic, even an agnostic, humanist or atheist, and still be considered a Hindu.
According to Hinduism, different religions are but alternate ways toward the same spiritual goal. Thus, although spirituality is a necessary quest for human beings, the religion one follows does not have to be the same for everyone. [...] The first Hindu scripture, the Rigveda, dating back to at least 4.000 years, says: "Truth is one, though the wise call it by different names." The Mahabharata, which includes the Gita, is replete with sayings meaning that religious streams, though separate, head toward the same ocean of divinity.
The Upanishads form the foundations of Hindu philosophical thought and the central theme of the Upanishads is the identity of Atman and Brahman, or the inner self and the cosmic self. [...] If we adhere to the thought that the Brahman is the cosmic principle governing the universe and Atman as its physical correlate, the essence of Upanishadic thought can be succinctly stated in the formula Brahman = Atman.