You can never repeat certain things. It's only once in a lifetime.
Youth comes but once in a lifetime.
I am death, not taxes. I turn up only once.
One lives but once in the world.
You only live once, so live a good life!
This opportunity comes once in a lifetime.
One can with dignity be wife and widow but once.
It is the lot of man but once to die.
We love but once, for once only are we perfectly equipped for loving.
Every one of us lives this life just once, if we are honest, to live once is enough.
A man can die but once.
I'm a comedian, and the other comedians are played by comedians, the same way that in 'Once' there are the musicians that hang out together.
