A journey of a thousand miles begins with a single step
It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife ( the opening line of Pride and Prejudice )
Scotch and the Single Girl ( J&B Scotch advertising slogan )
Single Ladies ( Put a Ring on It ) ( Beyonce song )
Single file
Single out
Single point of contact
Single sign-on
The longest journey starts with a single step
When sorrows come, they come not single spies, but in battalions