“There is endless merit in a man's knowing when to have done.”
Dr. Francia (1845).
1820s, Critical and Miscellaneous Essays (1827–1855)
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Thomas Carlyle 481
Scottish philosopher, satirical writer, essayist, historian… 1795–1881Related quotes

"The Great Good Man" (1802).
Context: How seldom, friend! a good great man inherits
Honor or wealth, with all his worth and pains!
It sounds like stories from the land of spirits
If any man obtain that which he merits,
Or any merit that which he obtains.
.........
Greatness and goodness are not means, but ends!
Hath he not always treasures, always friends,
The good great man? Three treasures,—love and light,
And calm thoughts, regular as infants' breath;
And three firm friends, more sure than day and night,—
Himself, his Maker, and the angel Death.

The Columbia River Collection (1941), Biggest Thing That Man Has Ever Done
Variant: The world is digging, slavery's grave and when the job is done
This'll be the biggest thing that man has ever done.
Context: I'd better quit my talking, 'cause I told you all I know,
But please remember, pardner, wherever you may go,
The people are building a peaceful world, and when the job is done
That'll be the biggest thing that man has ever done.

About Hillary Clinton email controversy
2010s, 2016, September, First presidential debate (September 26, 2016)