I found an interesting reference to Vitruvius' de Architectura in an essay by Montesquiue. Here is the passage from Vitruvius;
Quote1. Aristippus, the Socratic philosopher, shipwrecked on the coast of Rhodes, perceiving some diagrams [geometrica schemata] thereon, is reported to have exclaimed to his companions, "Be of good courage, I see marks of civilization": and straightaway making for the city of Rhodes, he arrived at the Gymnasium; where, disputing on philosophical subjects, he obtained such honours, that he not only provided for himself, but furnished clothing and food to his companions. When his companions had completed their arrangements for returning home, and asked what message he wished to send to his friends, he desired them to say: that the possessions and provision to be made for children should be those which can be preserved in case of shipwreck;
Reminds me of a scene in Robinson Crusoe when the title character finds a single human footprint on what he thought was a desert island.