The one Reality takes manifold names and forms as a result of human ignorance. It is one and the same Thing that a Bhakta calls God, a Jnani calls Brahman, a Shakta calls Shakti, an Atheist calls Nature, a Scientist calls Force or Energy, a Christian calls Father in Heaven, a Mussulman calls Allah, some others call Infinity or Truth and a Vedantin calls Atman or Self. Whatever different names there may be, the fact remains that the Thing is one and the same. The difference is only in names. The Absolute Thing, which is beyond name and form, is birthless, growthless, decayless, deathless, sexless, All-pervading, All-knowing, All-blissful, without beginning, without end, changeless, beyond time, space and causation. The One Thing or the Ocean of Consciousness by Itself is ever the same One only without a second.
Swami Narayanananda: A Practical Guide to Samadhi (Spiritual Teachings), p. 166 (2001, 1st ed. 1957)
Blessings of Light 