“The fiercest anger of all, the most incurable,
Is that which rages in the place of dearest love.”
Source: Medea and Other Plays: Medea / Alcestis / The Children of Heracles / Hippolytus
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Euripidés 116
ancient Athenian playwright -480–-406 BCRelated quotes

“It is past all controversy that what costs dearest is, and ought to be, most valued.”
Chap 11.
Don Quixote de la Mancha (1605–1615), Part I, Book IV

“Love and anger are like land and sea: They meet at many different places.”
Source: The Changeling Sea

A Conservative.
In this Our World : Poems (1898)

A Song of Defeat (1910)
Context: It is all as of old, the empty clangour,
The NOTHING scrawled on a five-foot page,
The huckster who, mocking holy anger,
Painfully paints his face with rage.
…
We that fight till the world is free,
We have no comfort in victory;
We have read each other as Cain his brother,
We know each other, these slaves and we.

“What a mistake rage is! anger should never go beyond a sneer, if it really desires revenge.”
Heath's book of Beauty, 1833 (1832)

Source: Living Beyond Your Feelings: Controlling Emotions So They Don't Control You

A Place in thy Memory, reported in Bartlett's Familiar Quotations, 10th ed. (1919).