The Grave of Bonaparte, reported in Bartlett's Familiar Quotations, 10th ed. (1919) (incorrectly attributed as "Leonard" Heath).
Quotes about mortal
page 5

From her poem Fame in Enthusiasm and Other Poems Smith, Elder and Co London 1831

Lay your sleeping head, my love (1937), lines 1–2, written January 1937; also known as Lullaby.

Sylphs
Poems (1851), Prometheus

“Play on, mortal. Every god falls at a mortal’s hands. Such is the only end to immortality.”
Source: Gardens of the Moon (1999), Chapter 7 (p. 208)

The Perimeter of Ignorance, Natural History Magazine, November 2005, 2010-12-07 http://www.haydenplanetarium.org/tyson/read/2005/11/01/the-perimeter-of-ignorance,
2000s

John Adams, letter to Thomas Jefferson (16 July 1814). From the Works of John Adams, Vol. X http://books.google.com/books?id=9G0vAAAAYAAJ&dq=works%20of%20john%20adams%20%22volume%20x%22&pg=PA100#v=onepage&q&f=false, p. 100
1810s

1990s, I Am a Man, a Black Man, an American (1998)
"Oh, that," Tlingel replied.
Unicorn Variation (1982)
Source: Endymion (1996), Chapter 24 (p. 184)

Letter to an unnamed American friend, as quoted in David Ben-Gurion, in His Own Words (1969) edited by Amram M. Ducovny, p. 57 - 60; similar remarks appeared in an address at Hebrew University (28 November 1945)

The Heart's Prayer.
Bartlett's Familiar Quotations, 10th ed. (1919)

“The mortality of all inanimate things is terrible to me, but that of books most of all.”
Letter to Charles Eliot Norton (6 April 1903)

Ich empfinde für das göttliche Wesen die tiefste Verehrung und hüte mich deshalb sehr, ihm ein ungerechtes, wankelmütiges Verhalten zuzuschreiben, das man beim geringsten Sterblichen verurteilen würde. Aus diesem Grunde, liebe Schwester, glaube ich lieber nicht, dass das allmächtige, gütige Wesen sich im mindesten um die menschlichen Angelegenheiten kümmert. Vielmehr schreibe ich alles, was geschieht, den Geschöpfen und notwendigen Wirkungen unberechenbarer Ursachen zu und beuge mich schweigend vor diesem anbetungswürdigen Wesen, indem ich meine Unwissenheit über seine Wege eingestehe, die mir zu offenbaren seiner göttlichen Weisheit nicht gefallen hat.
Letter to princess Amalie von Preußen

Book I
Exilius http://www.pierre-marteau.com/editions/1715-exilius.html (1715)

Cardanus Comforte (1574)

And each one hears,
And consummation comes, and jars two hemispheres.</p>
"The Convergence of the Twain (Lines on the loss of the Titanic), lines 22-33
Source: Sea Without a Shore (1996), Chapter 7 (p. 89)
Source: Lady of Mazes (2005), Chapter 14 (p. 161).

The Virtuous Lady.
The Holy State and the Profane State (1642)

“But the gods give to mortals not everything at the same time.”
IV. 320 (tr. R. Lattimore).
Iliad (c. 750 BC)

Canto II, stanza 22.
The Lady of the Lake http://www.gutenberg.org/etext/3011 (1810)

"An Hour" (1972), trans. Czesŀaw Miłosz and Lillian Vallee
From the Rising of the Sun (1974)

“O! immodest mortal! Your destiny is the joy of watching the evershifting battle!”
S. Rajasekar, N.Athavan, " Ludwig Edward Boltzmann http://arxiv.org/abs/physics/0609047" (7 September 2006), arXiv:physics/0609047v1 [physics.hist-ph]
Attributed

Source: Good Strategy Bad Strategy, 2011, p. 1; Lead paragraph introduction

"There Is No Compromise With Truth" ( a poem written in 1953 or 1954).

Sylvae (London, 1685), Translation of the Latter Part of the Third Book of Lucretius, "Against the Fear of Death", pp. 61–62.
“If men and mortal arms ye slight,
Know there are gods who watch o'er right.”
Source: Translations, The Aeneid of Virgil (1866), Book I, p. 27

“As long as his strength permits, the poor mortal must always climb new mountains.”
Examples of self-translation (c. 2004), Quotes - Zitate - Citations - Citazioni

1850s, Latter-Day Pamphlets (1850), Downing Street (April 1, 1850)

The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara (1570)

Page 69.
Golden Booklet of the True Christian Life (1551)

John Calvin. "Commentary on Luke 1:43". Harmony of Matthew, Mark, and Luke. 1. Retrieved 2009-01-07.
Harmony of Matthew, Mark, Luke

“Whence first arose among unhappy mortals throughout the world that sickly craving for the future? Sent by heaven, wouldst thou call it? Or is it we ourselves, a race insatiable, never content to abide on knowledge gained, that search out the day of our birth and the scene of our life's ending, what the kindly Father of the gods is thinking, or iron-hearted Clotho? Hence comes it that entrails occupy us, and the airy speech of birds, and the moon's numbered seeds, and Thessalia's horrid rites. But that earlier golden age of our forefathers, and the races born of rock or oak were not thus minded; their only passion was to gain the mastery of the woods and the soil by might of hand; it was forbidden to man to know what to-morrow's day would bring. We, a depraved and pitiable crowd, probe deep the counsels of the gods.”
Unde iste per orbem
primus venturi miseris animantibus aeger
crevit amor? divumne feras hoc munus, an ipsi,
gens avida et parto non umquam stare quieti,
eruimus quae prima dies, ubi terminus aevi,
quid bonus ille deum genitor, quid ferrea Clotho
cogitet? hinc fibrae et volucrum per nubila sermo
astrorumque vices numerataque semita lunae
Thessalicumque nefas. at non prior aureus ille
sanguis avum scopulisque satae vel robore gentes
mentibus his usae; silvas amor unus humumque
edomuisse manu; quid crastina volveret aetas
scire nefas homini. nos, pravum et flebile vulgus,
scrutati penitus superos.
Source: Thebaid, Book III, Line 551 (tr. J. H. Mozley)

Letter to George Washington (7 October 1776)
Interview in the documentary-film What the Health by Kip Andersen (2017).

Above-Average AI Scientists http://lesswrong.com/lw/uc/aboveaverage_ai_scientists/

Songs of the Soul by Paramahansa Yogananda, Quotes drawn from the poem "Samadhi"

What are we without the hope of a better future?
As quoted in Kneller, Karl Alois, Kettle, Thomas Michael, 1911. "Christianity and the leaders of modern science; a contribution to the history of culture in the nineteenth century" https://archive.org/stream/christianitylead00kneluoft#page/44/mode/2up, Freiburg im Breisgau, p. 44-45

“The man forget not, though in rags he lies,
And know the mortal through a crown's disguise.”
Source: Epistle to Curio (1744), Lines 197–198

Source: Debunking Economics - The Naked Emperor Of The Social Sciences (2001), Chapter 10, The Price Is Not Right, p. 216
"Conference at Edinburgh" (1963), p. 146
Tynan Right and Left (1967)

1920s, The Reign of Law (1925)
Source: The Meaning of God in Human Experience (1912), Ch. XIV : The Need of an Absolute, p. 198.

“It must be said that charity can, in no way, exist along with mortal sin.”
Quaestiones disputatae: De caritate (ca. 1270) http://dhspriory.org/thomas/QDdeVirtutibus2.htm#6

“The slippers of the mortal Earth, Now touched the chest of the Moon. Oh, It is shameful that”
Song of the Bumblebee (2008)

Source: Memory, Sorrow, and Thorn, The Dragonbone Chair (1988), Chapter 34, “Forgotten Swords” (p. 567).

Source: Memory, Sorrow, and Thorn, Stone of Farewell (1990), Chapter 25, “Petals in a Wind Storm” (pp. 626-627).

Source: A Thousand-Mile Walk To the Gulf, 1916, chapter 6: Cedar Keys, pages 160-161

From his Brilliant News email messages to subscribers, Tuesday, November 21 20017

“But when mischief mortals bend their will,
How soon they find fit instruments of ill!”
Canto III, line 125.
The Rape of the Lock (1712, revised 1714 and 1717)

La fama che invaghisce a un dolce suono
Voi superbi mortali, e par si bella,
E un'ecco, un sogno, anzi del sogno un'ombra,
Ch'ad ogni vento si dilegua e sgombra.
Canto XIV, stanza 63 (tr. Wickert)
Gerusalemme Liberata (1581)

“That orbed maiden with white fire laden,
Whom mortals call the moon.”
The Cloud, iv; reported in Bartlett's Familiar Quotations, 10th ed. (1919)

<p>Je suis belle, ô mortels! comme un rêve de pierre,
Et mon sein, où chacun s’est meurtri tour à tour,
Est fait pour inspirer au poète un amour
Eternel et muet ainsi que la matière.</p><p>Je trône dans l’azur comme un sphinx incompris;
J’unis un cœur de neige à la blancheur des cygnes;
Je hais le mouvement qui déplace les lignes,
Et jamais je ne pleure et jamais je ne ris.</p>
"La Beauté" [Beauty] http://fr.wikisource.org/wiki/La_Beaut%C3%A9_%28Les_Fleurs_du_mal%29
Les fleurs du mal (Flowers of Evil) (1857)
The Dragon Queen

“The happiest mortals on earth are ladies who have been bereaved by the loss of their husbands.”
Source: A Thousand & One Epigrams: Selected from the Writings of Elbert Hubbard (1911), p. 10.

1960s, State of the Union Address (1966)

Source: Titans of Chaos (2007), Chapter 3, “Within Sight of the Land of Freedom” Section 1 (pp. 42-43)

“All mortals tend to turn into the thing they are pretending to be.”
Letter X
The Screwtape Letters (1942)

Source: Towards Evening (1889), p. 158

“I hold that mortal foolish who strives against the stress of necessity.”
Hercules Furens l. 281

Journal of Discourses 1:50-51 (April 9, 1852)
This concept is commonly referred to as the "Adam–God theory."
1850s

The Tragic Sense of Life (1913), Conclusion : Don Quixote in the Contemporary European Tragi-Comedy

National Federation of Republican Assemblies, NYC, August 31, 2004. http://renewamerica.us/archives/speeches/04_08_31nfra.htm.
2009

p, 125
Researches on the effects of bloodletting... (1836)

"Ethan Brand" (1850)