Kissing could have begun as a way of sniffing out who's who. From a whiff to a kiss was just a short trip across the face.
Joshua FoerWhen we first hear [a] word, we start putting these associational hooks into it that make it easier to fish it back out at some later date.
Joshua FoerA meaningful relationship between two people cannot sustain itself only in the present tense.
Joshua Foer