“You can't change the past. Even if it hasn't happened yet.”
“You make me nostalgic for a love that hasn't even happened yet.”
“The future doesn't exist. It hasn't happened yet. The past doesn't exist. It has already happened.”
“There's no going back from what happened. You can go back and understand the past, but you can't go back and change it.”
“Worry is throwing good shillings at trouble that hasn't happened yet.”
“There's no such thing as writing about the future. The future hasn't happened yet.”