“In the Pontic triumph one of the decorated wagons, instead of a stage-set representing scenes from the war, like the rest, carried a simple three-word inscription: I CAME, I SAW, I CONQUERED! This referred not to the events of the war [against Pontus], like the other inscriptions, but to the speed with which it had been won.”
Source: The Twelve Caesars, Julius Caesar, Ch. 37
Original
Pontico triumpho inter pompae fercula trium verborum praetulit titulum VENI·VIDI·VICI non acta belli significantem sicut ceteris, sed celeriter confecti notam.
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Sueton 28
Roman historian 70–126Related quotes

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“I came, I saw, I conquered.”
Veni, vidi, vici.
Written in a report to Rome 47 B.C., after conquering Pharnaces at Zela in Asia Minor in just five days; as quoted in Life of Caesar http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Plutarch/Lives/Caesar*.html#50 by Plutarch; reported to have been inscribed on one of the decorated wagons in the Pontic triumph, in Lives of the Twelve Caesars, Julius http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Suetonius/12Caesars/Julius*.html#37, by Suetonius
Variant translation:
Came, Saw, Conquered
Inscription on the triumphal wagon reported in The Twelve Caesars by Suetonius, as translated by Robert Graves (1957)
Original: (sl) Veni, vidi, vici.

Report to the U.S. Senate on the George S. Patton slapping incidents, supporting Eisenhower's decision to retain Patton's services in the European theatre of WWII (November 1943)
Context: The decision to weigh Lieut. Gen. Patton's great services to his country, in World War I and World War II, from these shores to Casablanca and through Tunisia to triumph in Sicily, on the one hand, against an indefensible act on the other, was Gen. Eisenhower's.
As his report shows, General Eisenhower in making his decision also considered the value to our country of General Patton's aggressive, winning leadership in the bitter battles which are to come before final victory. I am confident that you will agree with me that Gen. Eisenhower's decision, under these difficult circumstances, was right and proper.

“I came, I saw, she conquered."
The original Latin seems to have been garbled.”
Source: Time Enough for Love