Kærlighedens natur kan beskrives fagligt. Men hvis man for alvor vil beskrive kærligheden og dens følelser må man ty til skønlitteraturen og poesien.
En af de smukkeste måder at beskrive kærlighed på, er denne fra Rainer Maria Rilke:
“For one human beeing to love another: that is perhaps the most difficult task that has been entrusted to us, the ultimate task, the final test and proof, the work for which all other work is merely preparation.
Loving does not at all first mean merging, surrendering, and uniting with another person – it is a high inducement for the individual to ripen, to become something in himself, to become world, to become world in himself for the sake of another person; it is a great, demanding claim on him, something that chooses him and calls him to vast distances.”