He who believes that the past cannot be changed has not yet written his memoirs.

It is not our job to apply laws that have not yet been written.

If there is a book that you want to read, but it hasn't been written yet, you must be the one to write it.

He's gotten past a couple hills, but he's not around the corner yet.

This fight's not over yet.

He's getting better, but he's not there yet.