Is not a kiss the very autograph of love?
Henry Finck

Give me a kiss, add to that kiss a score; Then to that twenty, add a hundred more:
A thousand to that hundred: so kiss on, To make that thousand up a million.
Treble that million, and when that is done, Let's kiss afresh, as when we first begun.
Robert Herrick

If you are ever in doubt as to whether or not you should kiss a pretty girl,
always give her the benefit of a doubt.
Thomas Carlyle