Source: Catholicism (1938), Ch. XI. "Person and Society", p. 179
“The first symptom of true love in a man is timidity, in a young woman, boldness. This is surprising, and yet nothing is more simple. It is the two sexes tending to approach each other and assuming each the other's qualities.”
Source: Les Misérables
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Victor Hugo 308
French poet, novelist, and dramatist 1802–1885Related quotes

“Man and woman are two locked caskets, of which each contains the key to the other.”
"A Consolatory Tale"
Winter's Tales (1942)

On her song "Running Up That Hill (A Deal with God)", in a Radio 1 Classic Albums interview with Richard Skinner (26 January 1992) http://gaffa.org/cloud/music/running_up_that_hill.html
Context: I was trying to say that, really, a man and a woman, can't understand each other because we are a man and a woman. And if we could actually swap each other's roles, if we could actually be in each other's place for a while, I think we'd both be very surprised! … And I think it would lead to a greater understanding. And really the only way I could think it could be done was either... you know, I thought a deal with the devil, you know. And I thought, "well, no, why not a deal with God!" You know, because in a way it's so much more powerful the whole idea of asking God to make a deal with you. You see, for me it is still called "Deal With God", that was its title. But we were told that if we kept this title that it would not be played in any of the religious countries, Italy wouldn't play it, France wouldn't play it, and Australia wouldn't play it! Ireland wouldn't play it, and that generally we might get it blacked purely because it had God in the title.

“That’s love: Two lonely persons keep each other safe and touch each other and talk to each other.”

Source: Why Men Are the Way They Are (1988), p. 310.

Section 5 : Love and Marriage
Founding Address (1876), Life and Destiny (1913)
Context: Love is the expansion of two natures in such fashion that each include the other, each is enriched by the other.
Love is an echo in the feelings of a unity subsisting between two persons which is founded both on likeness and on complementary differences. Without the likeness there would be no attraction; without the challenge of the complementary differences there could not be the closer interweaving and the inextinguishable mutual interest which is the characteristic of all deeper relationships.

“If these two are tired of having sex with each other, what hope is there for the rest of us?”
[referring to the Brad Pitt and Jennifer Aniston break-up][citation needed]

“When people are like each other they tend to like each other.”