Ending a sentence with a preposition

The old claim that it’s wrong to end a sentence with a preposition has been debunked. It’s not true now and it never was true. Writers who insist that a preposition can’t end a sentence often end up with stilted and unnatural-sounding sentences:

There’s no one else to hide behind. (Correct and natural)

There’s no one else behind whom to hide. (Correct but unnatural)

Where did you come from? (Correct and natural)

From where did you come? (Correct but unnatural)

That said, it is sometimes more elegant to move a preposition to an earlier spot in a sentence, especially in very serious and formal writing. But if you do move the preposition, remember to delete it from the end.

This is something we must meditate on.

This is something on which we must meditate.

This is something on which we must meditate on.