You don't stop laughing because you grow old. You grow old because you stop laughing.
The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd; indeed in view of the silliness of the majority of mankind, a widespread belief is more likely to be foolish than sensible.
Be sincere; be brief; be seated.
Three may keep a secret, if two of them are dead.
It's so much easier to write a resume than to craft a spirit.
I've never quite believed that one chance is all I get.
I was sick of cars driving right past me.