“It is of great advantage that man should know his station, and not imagine that the whole universe exists only for him.”
Source: Guide for the Perplexed (c. 1190), Part III, Ch.12
Context: It is of great advantage that man should know his station, and not imagine that the whole universe exists only for him. We hold that the universe exists because the Creator wills it so; that mankind is low in rank as compared with the uppermost portion of the universe, viz., with the spheres and the stars; but, as regards the angels, there cannot be any real comparison between man and angels, although man is the highest of all beings on earth; i. e., of all the beings formed of the four elements.
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Maimónides 180
rabbi, physician, philosopher 1138–1204Related quotes

“The whole universe is one. There is only one Self in the universe, only One Existence.”
Pearls of Wisdom

Source: Tolkien's The Lord of the Rings, p. 89
Context: But why,' (some ask), 'why, if you have a serious comment to make on the real life of men, must you do it by talking about a phantasmagoric never-never land of your own?' Because, I take it, one of the main things the author wants to say is that the real life of men is of that mythical and heroic quality. One can see the principle at work in his characterization. Much that in a realistic work would be done by 'character delineation' is here done simply by making the character an elf, a dwarf, or a hobbit. The imagined beings have their insides on the outside; they are visible souls. And Man as a whole, Man pitted against the universe, have we seen him at all till we see that he is like a hero in a fairy tale?

Sādhanā : The Realisation of Life http://www.spiritualbee.com/spiritual-book-by-tagore/ (1916)
Context: Man is not entirely an animal. He aspires to a spiritual vision, which is the vision of the whole truth. This gives him the highest delight, because it reveals to him the deepest harmony that exists between him and his surroundings. It is our desires that limit the scope of our self-realisation, hinder our extension of consciousness, and give rise to sin, which is the innermost barrier that keeps us apart from our God, setting up disunion and the arrogance of exclusiveness. For sin is not one mere action, but it is an attitude of life which takes for granted that our goal is finite, that our self is the ultimate truth, and that we are not all essentially one but exist each for his own separate individual existence.
of God
Source: The Sayings and Teachings of the Great Mystics of Islam (2004), p. 83

1840s, Heroes and Hero-Worship (1840), The Hero as Prophet

Source: Disputed, Hitler: Memoirs of a Confidant (1978), p. 16