Watch for the travelers that carry no marks. Some may wear their journey through ink, others through the mark of the blade or the tool. But those that have neither, yet cross the lands as if they were wading through water.
They may carry their marks inside.
Where they can stretch the skies and fill the oceans, without ever being seen. Those are the travelers to watch for, not the ones with letters or pictures adorning them, but the ones who are marked only by their dreams.