“The real cause I consider to be the one which was formerly most kept out of sight. The growth of the power of Athens, and the alarm which this inspired the Lacedaemon, made war inevitable.”
Book I, 1.23-[6]. (See: Thucydides Trap https://en.wikipedia.org/wiki/Thucydides%20Trap)
History of the Peloponnesian War, Book I
Help us to complete the source, original and additional information
Thucydides 76
Greek historian and Athenian generalRelated quotes

As quoted in “The Fascist Reform of the Penal Law in Italy,” Giulo Battaglin, Journal of Criminal Law and Criminology, Vol. 24, Issue 1, May-June, summer 1933, p. 286. Speech in the Senate (1925)

“I cannot, if I am in the field for glory, be kept out of sight.”
Letter to his wife, Frances Nelson (2 August 1796), as published in The Dispatches and Letters of Vice Admiral Lord Viscount Nelson with Notes (1845) edited Nicholas Harris Nicolas, Vol. II : 1795-1797, p. 203
1790s
Context: !-- Had all my actions, my dearest Fanny, been gazetted, not one fortnight would have passed during the whole war without a letter from me: one day or other I will have a long Gazette to myself; I feel that such an opportunity will be given me. --> I cannot, if I am in the field for glory, be kept out of sight. Probably my services may be forgotten by the great, by the time I get Home; but my mind will not forget, nor cease to feel, a degree of consolation and of applause superior to undeserved rewards. Wherever there is anything to be done, there Providence is sure to direct my steps. Credit must be given me in spite of envy. <!-- Even the French respect me: their Minister at Genoa, in answering a Note of mine, when returning some wearing apparel that had been taken, said, ‘Your Nation, Sir, and mine, are made to show examples of generosity, as well as of valour, to all the people of the earth.

“Growth is exciting; growth is dynamic and alarming.”
Twelve Days (1928) p. 9; part of this appears to have also become paraphrased in the form:
Context: It is necessary to write, if the days are not to slip emptily by. How else, indeed, to clap the net over the butterfly of the moment? for the moment passes, it is forgotten; the mood is gone; life itself is gone. That is where the writer scores over his fellows: he catches the changes of his mind on the hop. Growth is exciting; growth is dynamic and alarming. Growth of the soul, growth of the mind; how the observation of last year seems childish, superficial; how this year — even this week — even with this new phrase — it seems to us that we have grown to a new maturity. It may be a fallacious persuasion, but at least it is stimulating, and so long as it persists, one does not stagnate.
I look back as through a telescope, and see, in the little bright circle of the glass, moving flocks and ruined cities.
"Non-Resistance and The Present War - A Reply to Mr. Russell," International Journal of Ethics (April 1915), vol. 25, no. 3, pp. 307-316
Source: Empire of the Sun (1984), p. 6
Context: Real war was the thousands of Chinese refugees dying of cholera in the sealed stockades at Pootung, and the bloody heads of Communist soldiers mounted on pikes along the Bund. In a real war no one knew which side he was on, and there were no flags or commentators or winners. In a real war there were no enemies.
Source: Intuitions and Summaries of Thought (1862), Volume I, p. 82.

2000s, Where the Right Went Wrong (2004)

As quoted in Essays on Freedom and Power, Introduction, p. xlvii (1949) https://mises.org/sites/default/files/Essays%20on%20Freedom%20and%20Power_3.pdf