Fifth Day, Novel XLVIII (trans. W. K. Kelly)
L'Heptaméron (1558)
“Jealousy is a disease; love is a healthy condition. The immature mind often confuses one for the other, or assumes the greater the love, the greater the jealousy. In fact they are almost incompatible; both at once produce unbearable turmoil.”
"Jubal Harshaw" in the first edition (1961); this is another line not in the "Uncut" edition of 1991 based on his original manuscripts, because this was one of the lines that Heinlein added, rather than trimmed down, during the editing process of the first edition.
Stranger in a Strange Land (1961; 1991)
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Robert A. Heinlein 557
American science fiction author 1907–1988Related quotes
Source: Confessions of a Mask (1949), p. 208.
Context: I received an impassioned letter from Sonoko. There was no doubt that she was truly in love. I felt jealous. Mine was the unbearable jealousy a cultured pearl must feel toward a genuine one. Or can there be such a thing in this world as a man who is jealous of the woman who loves him, precisely because of her love?
“In jealousy there is more of self-love than love.”
Il y a dans la jalousie plus d'amour-propre que d'amour.
Maxim 324.
Reflections; or Sentences and Moral Maxims (1665–1678)
“The kernel of all jealousy is lack of love.”
C.G. Jung
(1875–1961) Swiss psychiatrist and psychotherapist who founded analytical psychology
Oliver Wendell Holmes
(1809–1894) Poet, essayist, physician
A Mortal Antipathy (1885) This statement is often misquoted as "Love is the master-key that opens the gates of happiness".
“Healthy jealousy is the first form of true interest in a person.”
Prevale
(1983) Italian DJ and producer
Original: La sana gelosia è la prima forma di vero interesse per una persona.
Source: prevale.net
“Jealousy is always born with love but does not always die with it.”
La jalousie naît toujours avec l'amour, mais elle ne meurt pas toujours avec lui.
Maxim 361.
Reflections; or Sentences and Moral Maxims (1665–1678)
“Even insects express anger, terror, jealousy, and love by their stridulation.”
Source: The Expression of the Emotions in Man and Animals (1872), chapter XIV: "Concluding Remarks and Summary", page 350