"They say that the most enduring passions are either born in a single instant, or are the result of a treacherously increasing liking.

Take the latter case.

Why is it impossible, for you or for me?
We are slipping from mere liking into friendship, and for all I know we may some day fall headlong from friendship into love.

It would be very foolish no doubt, but it seems to me quite possible.

Do you not see it ?" The Wanderer laughed lightly.