“I measured love by the extent of my jealousy.”
Source: The End of the Affair
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Graham Greene 164
English writer, playwright and literary critic 1904–1991Related quotes

“I love my government not least for the extent to which it leaves me alone.”
Testimony given before the Subcommittee on Select Education of the House of Representatives Committee on Education and Labor, Boston, Massachusetts (30 January 1978)

“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.”

“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)

"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)

“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