“It is to deny, what the history of the world tells us is true, to suppose that men of ambition and talents will not continue to spring up amongst us. And, when they do, they will as naturally seek the gratification of their ruling passion, as others have so done before them.”

Reported in Louise Bernikow, The American Women's Almanac: An Inspiring and Irreverent Women's History (1997), p. 185.
Attributed

Lecture XXVIL: On Habit - Part II, in “Elementary Sketches of Moral Philosophy”, delivered at The Royal Institution in the years 1804, 1805, and 1806 by the late Rev. Sydney Smith, M.A. (Spottiswoodes and Shaw (London: 1849)) http://www.archive.org/stream/elementarysketc03smitgoog#page/n438/mode/2up, p. 423-424
Another Variant: The history of the world shows us that men are not to be counted by their numbers, but by the fire and vigour of their passions; by their deep sense of injury; by their memory of past glory; by their eagerness for fresh fame; by their clear and steady resolution of ceasing to live, or of achieving a particular object, which, when it is once formed, strikes off a load of manacles and chains, and gives free space to all heavenly and heroic feelings. All great and extraordinary actions come from the heart. There are seasons in human affairs when qualities, fit enough to conduct the common business of life, are feeble and useless, when men must trust to emotion for that safety which reason at such times can never give. These are the feelings which led the ten thousand over the Carduchian mountains; these are the feelings by which a handful of Greeks broke in pieces the power of Persia; and in the fens of the Dutch, and on the mountains of the Swiss, defended the happiness and revenged the oppressions of man! God calls all the passions out in their keenness and vigour for the present safety of mankind, anger and revenge, and the heroic mind, and a readiness to suffer—all the secret strength, all the invisible array of the feelings—all that nature has reserved for the great scenes of the world. When the usual hopes and the common aids of man are all gone, nothing remains under God but those passions which have often proved the best ministers of His purpose and the surest protectors of the world.
Quoted by Theodore Roosevelt in his " Brotherhood and the Heroic Virtues http://www.theodore-roosevelt.com/images/research/txtspeeches/668.pdf" Address at the Veterans' Reunion, Burlington, Vermont, September 5, 1901 and published in Theodore Roosevelt's "The Strenuous Life: Essays and Addresses" by Dover Publications (April 23, 2009) in its Dover Thrift Editions (ISBN: 978-0486472294), p. 126-127
Elementary Sketches of Moral Philosophy (1849)
Context: The history of the world shows us that men are not to be counted by their numbers, but by the fire and vigour of their passions; by their deep sense of injury; by their memory of past glory; by their eagerness for fresh fame; by their clear and steady resolution of ceasing to live, or of achieving a particular object, which, when it is once formed, strikes off a load of manacles and chains, and gives free space to all heavenly and heroic feelings. All great and extraordinary actions come from the heart. There are seasons in human affairs, when qualities fit enough to conduct the common business of life, are feeble and useless; and when men must trust to emotion, for that safety which reason at such times can never give. These are the feelings which led the ten thousand over the Carduchian mountans; these are the feelings by which a handful of Greeks broke in pieces the power of Persia: they have, by turns, humbled Austria, reduced Spain; and in the fens of the Dutch, and on the mountains of the Swiss, defended the happiness, and revenged the oppressions, of man! God calls all the passions out in their keenness and vigour, for the present safety of mankind. Anger, and revenge, and the heroic mind, and a readiness to suffer;— all the secret strength, all the invisible array, of the feelings,— all that nature has reserved for the great scenes of the world. For the usual hopes, and the common aids of man, are all gone! Kings have perished, armies are subdued, nations mouldered away! Nothing remains, under God, but those passions which have often proved the best ministers of His vengeance, and the surest protectors of the world.

2010s, Liberty University Speech (14 September 2015)

Pt. III, sec. 2, ch. 24 Lectures on the History of History Vol 1 p. 21 John Sibree translation (1857), 1914
Lectures on the Philosophy of History (1832), Volume 1
Context: Although Freedom is, primarily, an undeveloped idea, the means it uses are external and phenomenal; presenting themselves in History to our sensuous vision. The first glance at History convinces us that the actions of men proceed from their needs, their passions, their characters and talents; and impresses us with the belief that such needs, passions and interests are the sole springs of action — the efficient agents in this scene of activity. Among these may, perhaps, be found aims of a liberal or universal kind — benevolence it may be, or noble patriotism; but such virtues and general views are but insignificant as compared with the World and its doings. We may perhaps see the Ideal of Reason actualized in those who adopt such aims, and within the sphere of their influence; but they bear only a trifling proportion to the mass of the human race; and the extent of that influence is limited accordingly. Passions, private aims, and the satisfaction of selfish desires, are on the other hand, most effective springs of action. Their power lies in the fact that they respect none of the limitations which justice and morality would impose on them; and that these natural impulses have a more direct influence over man than the artificial and tedious discipline that tends to order and self-restraint, law and morality. When we look at this display of passions, and the consequences of their violence; the Unreason which is associated not, only with them, but even (rather we might say especially) with good designs and righteous aims; when we see the evil, the vice, the ruin that has befallen the most flourishing kingdoms which the mind of man ever created, we can scarce avoid being filled with sorrow at this universal taint of corruption: and, since this decay is not the work of mere Nature, but of the Human Will — a moral embitterment — a revolt of the Good Spirit (if it have a place within us) may well be the result of our reflections.

Source: A Mother's Advice to Her Daughter, 1728, p. 172

Thoughts on Man's Purpose in Life (1974), Exchange with Admiral Rickover (1982)
Context: If history has any meaning for us, it shows that men will continue to use the best weapons they have to win. Throughout history, even when men have established leagues to prevent war, they have nevertheless restarted to it. Utopia is still beyond the horizon. Above all, we should bear in mind that our liberty is not an end in itself; it is a means to win respect for human dignity for all classes of our society.

Jude the Obscure

Page 63 (Act 2, Scene 1)
Long Day's Journey into Night (1955)
Source: Long Day's Journey Into Night
Context: But I suppose life has made him like that, and he can't help it. None of us can help the things life has done to us. They're done before you realize it, and once they're done they make you do other things until at last everything comes between you and what you'd like to be, and you've lost your true self forever.