“Men do not rest content with parrying the attacks of a superior, but often strike the first blow to prevent the attack being made.”
Book VI, 6.18-[2]
History of the Peloponnesian War, Book VI
Help us to complete the source, original and additional information
Thucydides 76
Greek historian and Athenian generalRelated quotes

On Protracted Warfare (1938)

"What Happens Next to Iraq" http://www.mirror.co.uk/news/topstories/tm_objectid=12677144&method=full&siteid=94762-name_page.html, Daily Mirror (2003-02-26): On the 2003 invasion of Iraq
2000s, 2003

Freeman (1948), p. 150

Diary (14 July 1889)
Diary and Letters of Rutherford Birchard Hayes (1922 - 1926)

“When under attack, no country is obligated to collect permission slips from allies to strike back.”
"The Axis of Petulance" in The Washington Post (1 March 2002)
2000s, 2002

Quoted in "The First and the Last," 1954.
The First and the Last (1954)

Source: Aphorisms and Reflections (1901), p. 215