Love (n.) may be compared to a ghost, something we talk about but have never seen.
Love (n.) is like a ghost: everyone talks about it, no one has seen it.
Love (n.) is a deception of the species, which needs to further itself, that is played upon on the individual.
Love (n.) and hate can live together: Plato compares a man's love to a wolf's love for a sheep.
Love (n.) kills its half-dozen Werthers in Europe every year, chronicled only in the police news, and drives a still greater number into the asylum.
Love (n.) is an illusion whereby that which has value only for the species is represented as having valuable for the individual.
Love (n.) in an exuberantly naive formula is a tickling accompanied by the idea of an external cause.
Love (n.) is a deception practiced by nature. As such, marriage is the attrition of love, and must be disillusioning.
Love (n.) can spring up between people with no fitness of character at all, even with enmity — it makes them blind, and if it leads to marriage, a very unhappy one.
Love (n.) however ethereal it seems springs entirely from the sex instinct — it is that instinct itself, only more specialised and individualised.
Love (n.) is to the soul what weight is to a body: as a body is carried by its weight, so the mind is carried by love wherever it goes.
Love (n.) is an illusion like no other: it makes a man sacrifice everything to obtain this one woman, who will in reality satisfy him no more than any other.
Love (n.) is no trifle: its seriousness matches its stakes, for it decides nothing less than the composition of the next generation.
Love (n.) cannot be a mere fiction, or poets of every age would not have painted it with such zeal; nothing artistically beautiful can exist without truth.
Love (n.) can grow from a controllable inclination into a passion surpassing every other, for which a man will risk his life and, if rejected, throw it away.
Love (n.) is the will of the species appearing in the individual — which is why its raptures and troubles feel transcendent, and why it relates to every merely personal concern as body to surface.
Love (n.) is a hostile demon that leaves its love-letters and locks of hair in ministerial portfolios and philosophical manuscripts, making the honest perfidious and the faithful a betrayer.
Love (n.) when it is true is sympathy, and all love that is not sympathy is selfishness: Eros is selfishness, agape is sympathy, and friendship is always a mixture of the two.
Love (n.) loves what it lacks: each seeks in the other the correction of his own deviation from the type, so great passions are kindled not by stereotyped perfect beauties but by exact complements.