“For the glory of God is the living man, and the life of man is the vision of God.”

In the Introitus (Preface) from his late editions.
Original in Latin: "Finis Creationis telluris est gloria Dei ex opere Naturae per Hominem solum"
Variant translation: "The purpose of Creation is the glory of God, as can be seen from the works in nature by man alone."
Systema Naturae

Literary and Historical Miscellanies (1855), The Necessity, the Reality, and the Promise of the Progress of the Human Race (1854)
Context: The glory of God is not contingent on man's good will, but all existence subserves his purposes. The system of the universe is as a celestial poem, whose beauty is from all eternity, and must not be marred by human interpolations. Things proceed as they were ordered, in their nice, and well-adjusted, and perfect harmony; so that as the hand of the skilful artist gathers music from the harp-strings, history calls it forth from the well-tuned chords of time. Not that this harmony can be heard during the tumult of action. Philosophy comes after events, and gives the reason of them, and describes the nature of their results. The great mind of collective man may, one day, so improve in self-consciousness as to interpret the present and foretell the future; but as yet, the end of what is now happening, though we ourselves partake in it, seems to fall out by chance. All is nevertheless one whole; individuals, families, peoples, the race, march in accord with the Divine will; and when any part of the destiny of humanity is fulfilled, we see the ways of Providence vindicated. The antagonisms of imperfect matter and the perfect idea, of liberty and necessary law, become reconciled. What seemed irrational confusion, appears as the web woven by light, liberty and love. But this is not perceived till a great act in the drama of life is finished. The prayer of the patriarch, when he desired to behold the Divinity face to face, was denied; but he was able to catch a glimpse of Jehovah, after He had passed by; and so it fares with our search for Him in the wrestlings of the world. It is when the hour of conflict is over, that history comes to a right understanding of the strife, and is ready to exclaim: "Lo! God is here, and we knew it not."

Neb [No-one] (1985)
Context: On seeing his shadow fall on such ancient rocks, he had to question himself in a different context and ask the same old question as before, "Who am I?", and the answer now came more emphatically than ever before, "No-one."
But a no-one with a crown of light about his head. He would remember a verse from Pindar: "Man is a dream about a shadow. But when some splendour falls upon him from God, a glory comes to him and his life is sweet."

Listen, Little Man! (1948)

Source: Miscellaneous Poems (1773), A Paraphrase on the Prayer used in The Church Liturgy for All Sorts and Conditions Of Men, XII
Context: This short Supplication, or Litany, read
When the longer with us is not wont to be said,
Tho' brief in Expression, as fully imports
The Will to all Blessings, for "Men of all Sorts," —
Same brotherly Love, by which Christians are taught
To "pray without ceasing," or limiting
Thought; That Religion may flourish upon its true Plan
Of Glory to God and Salvation to Man.

551-553
Fruits of Solitude (1682), Part I
Context: Did we believe a final Reckoning and Judgment; or did we think enough of what we do believe, we would allow more Love in Religion than we do; since Religion it self is nothing else but Love to God and Man. He that lives in Love lives in God, says the Beloved Disciple: And to be sure a Man can live no where better. It is most reasonable Men should value that Benefit, which is most durable. Now Tongues shall cease, and Prophecy fail, and Faith shall be consummated in Sight, and Hope in Enjoyment; but Love remains.

8 September 1833. As quoted in: Maurice York and Rick Spaulding (2008): Ralph Waldo Emerson – The the Infinitude of the Private Man: A Biography. https://books.google.de/books?id=_pRMlDQavQwC&pg=PA240&dq=A+man+contains+all+that+is+needful+to+his+government+within+himself&hl=de&sa=X&ved=0ahUKEwiahO73qqfeAhUwpIsKHRqzDswQ6AEIQDAD#v=onepage&q=A%20man%20contains%20all%20that%20is%20needful%20to%20his%20government%20within%20himself&f=false Chicago and Raleigh: Wrighwood Press, pages 240 – 241. Derived from: Edward Waldo Emerson and Waldo Emerson Forbes (1909): Journals of Ralph Waldo Emerson, with annotations, III, pages 200-201.
1820s, Journals (1822–1863)
Context: A man contains all that is needful to his government within himself. He is made a law unto himself. All real good or evil that can befal [sic] him must be from himself. He only can do himself any good or any harm. Nothing can be given to him or can taken from him but always there is a compensation.. There is a correspondence between the human soul and everything that exists in the world; more properly, everything that is known to man. Instead of studying things without the principles of them, all may be penetrated unto with him. Every act puts the agent in a new position. The purpose of life seems to be to acquaint a man with himself. He is not to live the future as described to him but to live the real future to the real present. The highest revelation is that God is in every man.

Interview with R.K. Karanjia for Blitz magazine (1976)

Preface
The Presidential Papers (1963)
Context: Ultimately a hero is a man who would argue with the gods, and so awakens devils to contest his vision. The more a man can achieve, the more he may be certain that the devil will inhabit a part of his creation.