“Every discord is a harmony not understood. Happiness is a disease, and pain, a medicine.”
The Way to Peace, Power and Long Life (1945), p. 121 (2001 edition)
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Swami Narayanananda 10
Indian guru 1902–1988Related quotes

"A Lost Chord".
Legends and Lyrics: Second Series (1861)

Original: (it) La musica è lo strumento più antico al mondo, la miglior medicina, l'armonia e la pura espressione di ogni anima.
Source: prevale.net

“Music, to create harmony, must investigate discord.”

“What the discordant harmony of circumstances would and could effect.”
Quid velit et possit rerum concordia discors
Book I, epistle xii, line 19
Epistles (c. 20 BC and 14 BC)

“Opposition brings concord. Out of discord comes the fairest harmony.”
As translated by Philip Wheelwright in Heraclitus (1959) https://archive.org/details/heraclitus00whee
Disputed

Woman in the Nineteenth Century (1845)
Context: Every relation, every gradation of nature is incalculably precious, but only to the soul which is poised upon itself, and to whom no loss, no change, can bring dull discord, for it is in harmony with the central soul. If any individual live too much in relations, so that he becomes a stranger to the resources of his own nature, he falls, after a while, into a distraction, or imbecility, from which he can only becured by a time of isolation, which gives the renovating fountains time to rise up. With a society it is the same.

St. 23.
Morituri Salutamus http://www.americanpoems.com/poets/longfellow/19229 (1875)

“For harmony makes small states great, while discord undermines the mightiest empires.”
Nam concordia parvae res crescunt, discordia maxumae dilabuntur.
X.6
Bellum Iugurthinum