“He
That kills himself to avoid misery, fears it,
And, at the best, shows but a bastard valour.
This life's a fort committed to my trust,
Which I must not yield up till it be forc'd.
—Nor will I. He's not valiant that dares die,
But he that boldly bears calamity.”

Referring to Mr. Burns. Compare to Heart of Darkness' manager: "He was becoming confidential now, but I fancy my unresponsive attitude must have exasperated him at last, for he judged it necessary to inform me he feared neither God nor devil, let alone any mere man. I said I could see that very well..."
The Shadow Line (1915)

Waldersee in his diary, 8 October 1890, commenting on the imperial field maneuvers of that year, when Waldersee defeated the formations commanded by Kaiser Wilhelm II.

Misattributed

Martin Luther, quoted at the beginning of The Screwtape Letters
Misattributed

Know Thyself (1881)
Context: What "Conservatives," "Liberals" and "Conservative-liberals," and finally "Democrats," "Socialists," or even "Social-democrats" etc., have lately uttered on the Jewish Question, must seem to us a trifle foolish; for none of these parties would think of testing that "Know thyself" upon themselves, not even the most indefinite and therefore the only one that styles itself in German, the "Progress"-party. There we see nothing but a clash of interests, whose object is common to all the disputants, common and ignoble: plainly the side most strongly organised, i. e. the most unscrupulous, will bear away the prize. With all our comprehensive State- and National-Economy, it would seem that we are victims to a dream now flattering, now terrifying, and finally asphyxiating: all are panting to awake therefrom; but it is the dream's peculiarity that, so long as it enmeshes us, we take it for real life, and fight against our wakening as though we fought with death. At last one crowning horror gives the tortured wretch the needful strength: he wakes, and what he held most real was but a figment of the dæmon of distraught mankind.
We who belong to none of all those parties, but seek our welfare solely in man's wakening to his simple hallowed dignity; we who are excluded from these parties as useless persons, and yet are sympathetically troubled for them, — we can only stand and watch the spasms of the dreamer, since no cry of ours can pierce to him. So let us save and tend and brace our best of forces, to bear a noble cordial to the sleeper when he wakes, as of himself he must at last.

XXXIV, Of Death, lines 1-2
The Works of Ben Jonson, First Folio (1616), Epigrams

Special Laws, 1st century.

Chapter 117 http://en.wikisource.org/wiki/The_Count_of_Monte_Cristo/Chapter_117
Source: The Count of Monte Cristo (1845–1846)
Context: Tell the angel who will watch over your future destiny, Morrel, to pray sometimes for a man who, like Satan, thought himself, for an instant, equal to God; but who now acknowledges, with Christian humility, that God alone possesses supreme power and infinite wisdom... There is neither happiness nor misery in the world; there is only the comparison of one state with another, nothing more. He who has felt the deepest grief is best able to experience supreme happiness. We must have felt what it is to die, Morrel, that we may appreciate the enjoyments of life.