From an evolutionary standpoint, human consciousness has not been around very long. A little light just went on after four and a half billion years. How often does that happen? Maybe it is quite rare.
This is a once in a lifetime event. It is very rare to remove 86% of the currency in circulation in one go. The logistics of such an operation are mammoth.
That moon which the sky never saw even in dreams has risen again
We know too little about how life began on Earth to lay confident odds. It may have involved a fluke so rare that it happened only once in the entire galaxy. On the other hand, it may have been almost inevitable, given the right environment.
This experience has been once in a lifetime.
The shop is only open one day a year.
After losing his relection bid to political novice Paul Wellstone:
You know, there was a time, just before I started to study physical science, when astronomers thought that systems such as we have here in the solar system required a rare triple collision of stars.
Someone once described the pitching of a no-hit game as like catching lighting in a bottle.
A man who gets few letters does not open one lightly.
Nas is the only person whose concert I been to.
Normally, on the rare chance that a celebrity comes to my property, I get real nervous.
It's a once-in-a-lifetime event for all of us, something like this.
A native of America who cannot read or write is . . . as rare as a comet or an earthquake.
I wrestled Tyler Breeze one time when there was, like, 20 people at the show.
In sports, the confluence of the 1989 Oakland vs. San Francisco World Series and the Loma Prieta earthquake notwithstanding, the earth rarely moves.
Very rarely is there a spike in news-stand sales.
A woman opening a movie with no other star is like a miracle.
The Venus transit is not a spectacle the way a total solar eclipse is a spectacle.
I haven't been to a movie since somebody gave me free tickets to Star Wars, which I went to.
Once in a blue moon, an entire industry is a good short.
You are heaven's Halley's comet; we have one shot at seeing you shine.
A Champions League final is so rare to play.
I had never seen a perfect game or no-hitter thrown.