“The result showed that fortune helps the brave.”

Attributed by Pliny the Younger to his uncle during the eruption of Mount Vesuvius in which the Elder died
Quoted in [Pliny, translated by William Melmoth, Letters of Pliny, c.100 CE, eBook, 1927, Bibliobytes, Hoboken, NJ, English, ISBN 0585049971, LXV, to Tacitus http://www.gutenberg.org/files/2811/2811-h/2811-h.htm#link2H_4_0065, p. 48, Here he stopped to consider whether he should turn back again; to which the pilot advising him, "Fortune", said he, "favours the brave; steer to where Pomponianus is."]
Commonly quoted as "Fortune favours the bold".

As quoted by Macrobius in Saturnalia, Book VI, Chapter I

The origin of this quote is often misattributed to Cicero; however, it is from Line 135-136 of Book 2, Satire 2 by Horace, "Quocirca vivite fortes, fortiaque adversis opponite pectora rebus." The English translation that most closely matches the one misrepresented as Cicero's is from a collection of Horace's prose written by E. C. Wickham, "So live, my boys, as brave men; and if fortune is adverse, front its blows with brave hearts."
Misattributed

Book II, Satire II, Line 135-136 (trans. E. C. Wickham)
Satires (c. 35 BC and 30 BC)

Source: Don Quixote de la Mancha (1605–1615), Part I, Book I, Ch. 4.

In August 1780, as quoted in "Death of Baron De Kalb" https://books.google.com/books?id=k2QAAAAAYAAJ&pg=PA234&lpg=PA234&dq=%22I+thank+you+sir+for+your+generous+sympathy,+but+I+die+the+death+I+always+prayed+for:+the+death+of+a+soldier+fighting+for+the+rights+of+man%22&source=bl&ots=-93hJzoCYU&sig=tAag8ObQI-ZjiII56viczov02wM&hl=en&sa=X&ei=VlYVVcuJI4KmNsazgYgL&ved=0CCUQ6AEwAQ#v=onepage&q=%22I%20thank%20you%20sir%20for%20your%20generous%20sympathy%2C%20but%20I%20die%20the%20death%20I%20always%20prayed%20for%3A%20the%20death%20of%20a%20soldier%20fighting%20for%20the%20rights%20of%20man%22&f=false (1849), by Benjamin Franklin Ells, The Western Miscellany, Volume 1, p. 234.
1780s

"Words Weren't Made For Cowards"
Warpaint (1991)
Context: Do I have to dig? Do I have to prod?
Reach into your chest
And pull your feelings out?
Are you dancing dead?
Or maybe walking toast?
If you feel anything
Be brave
Come forth
Let it show.
Tell me what d'you think of life?
Tell me do you think at all?

Source: Magic Breaks

Introduction
2010s, 2013, Things That Matter: Three Decades of Passions, Pastimes and Politics (2013)