“Indeed, when a ruler once becomes unpopular, all his acts, be they good or bad, tell against him.”
Book I, 7
Histories (100-110)
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Tacitus 42
Roman senator and historian 54–120Related quotes

“When she was good,
She was very good indeed,
But when she was bad she was horrid.”
There Was a Little Girl http://rpo.library.utoronto.ca/poem/1345.html
Often misquoted as "When she was good/She was very, very good".
Context: There was a little girl,
Who had a little curl,
Right in the middle of her forehead.
When she was good,
She was very good indeed,
But when she was bad she was horrid.

“Tell him to live by yes and no — yes to everything good, no to everything bad.”
As quoted in The Thought and Character of William James (1935) by Ralph Barton Perry, Vol. II, ch. 91
1890s

“Every man hath a good and a bad angel attending on him in particular, all his life long.”
Section 2, member 1, subsection 2, A Digression of the nature of Spirits, bad Angels, or Devils, and how they cause Melancholy.
The Anatomy of Melancholy (1621), Part I

Anarchism: Its Philosophy and Ideal (1896)