"The Best is Yet to Come", words and music by Carolyn Leigh and Cy Coleman, written for Frank Sinatra in 1960, was a song in Vic Fontaine's repertoire. Captain Sisko sang it in a duet with Vic Fontaine for Kasidy as a reply to her earlier argument that people in 2375 were limited only by their minds. (DS9: "Badda-Bing, Badda-Bang")
Lyrics
Out of the tree of life, I just picked me a plum
You came along and everything started to hum
Still it's a real good bet, the best is yet to come
The best is yet to come, and babe won't that be fine
You think you’ve seen the sun, but you ain't seen it shine
Wait 'til the warm-up is underway
Wait 'til our lips have met
Wait 'til you see that sunshine day
You ain’t seen nothin' yet
The best is yet to come, babe and won't that be fine
The best is yet to come, come the day that your mine
Come the day that your mine
I'm gonna teach you to fly
We've only tasted the wine
We're gonna drain that cup dry
Wait till your charms are right, for the arms to surround
You think you've flown before, but you ain't left the ground
Wait till you're locked in my embrace
Wait till I hold you near
Wait till you see that sunshine place
There ain't nothin' like it here
The best is yet to come, and won't that be fine
The best is yet to come, come the day that your mine