“I must be gone and live, or stay and die.”

Lews Therin Telamon
(15 October 1994)

Reported in Will and Ariel Durant, Age of Reason Begins: Volume 7 (1961), p. 240.

Temenidæ Frag. 734
Context: When good men die their goodness does not perish,
But lives though they are gone. As for the bad,
All that was theirs dies and is buried with them.

Spoken on his deathbed to his sister-in-law, Sophie Weber (5 December 1791), from Mozart: The Man and the Artist, as Revealed in his own Words by Friedrich Kerst, trans. Henry Edward Krehbiel (1906)
Variant: The taste of death is on my tongue, I feel something that is not from this world (Der Geschmack des Todes ist auf meiner Zunge, ich fühle etwas, das nicht von dieser Welt ist).

"When I'm Gone" http://web.cecs.pdx.edu/~trent/ochs/lyrics/when-im-gone.html from Phil Ochs in Concert (1966)
Lyrics

Book II, Chapter VI; translation from Michael Winterbottom, Declamations of the Elder Seneca (London: Heinemann, 1974) vol. 1 p. 349
Some editions of Seneca prefer the reading Bibamus, moriendum est (Let us drink – we must die).
Controversiae

Original French: Je prononce à regret cette fatale vérité... mais Louis doit mourir, parce qu'il faut que la patrie vive.
Speech to the National Convention http://www.royet.org/nea1789-1794/archives/journal_debats/an/1792/convention_1792_12_03.htm on the judgment of Louis XVI (3 December 1792)

Manley, B. (2015). Union Officer to Receive Medal of Honor for Heroics at Gettysburg. Military History, 31(5), 8.
Upon his decision to remain at his position in the face of a 12,500-man Confederate assault.